Topcon TRC-WT Retinal Camera Instruction Manual

Topcon TRC-WT Retinal Camera Instruction Manual
For digital camera upgrades and service contact:
Richard J Kinch, PhD
Palm Beach County, Florida USA
http://www.truetex.com/
+1 (561) 966-8400
TOPCOI\
TOKYO OPTICAL CO, LTO.
has officially become
TOPCON CORPORATION
eHective April 1, 1989.
This page intentionally blank.
Congratulations on your choice of the TOPCON Variable-Angle Retinal Camera, Model
TRC-W(or TRC-WT), which has been designed for use in retinal fluorescein angiography
and thus is a very important diagnostic tool for the internist, as well as the ophthalmologist.
Photographs of the ocular fundus, including the papilla and macula lutea, as well as ocular
anterior are possible with the instrument. The standard Auto Winder Attachment
provides easy, automatic operations controlled by the release button on the control lever
of the cross-slide base, thus making handling procedures very simple and convenient
for the user.
Furthermore, the TOPCON Variable-Angle Retinal Camera, Model TRC-W(or TRC-WT),
features a revolutionary angle changing system which makes it possible to take retinal
photographs at 45, 30 and 20 degree angles of coverage, with the last giving a narrow
enlarged view and the first giving an extra-wide view covering the complete retinal area.
A complete assortment of optional equipment is also available for use with the Model
TRC-W(or TRC-WT), which will greatly increase the versatility of the instrument.
We would like to recommend that you read through the instructions before touching the
instrument, as you will be able to obtain maximum utilization of its capabilities when you
are fully acquainted with the retinal camera and its operations.
"Polaroid" and "Polacolor" are registered trademarks of the Polaroid Corporation,
Cambridge, Mass., U.S.A.
IMPORTANT
1.
Check the primary voltage set to the instrument before connecting it to the line current. If unsuitable, adjust as per instructions.
2.
Use the instrument within ± 5 percent of the rated voltage, as otherwise recycling
time will take longer.
3.
Always switch OFF the power switch of the power supply unit before disconnecting
or connecting cords. Furthermore, wait at least for five minutes after switch-OFF
before disconnecting the 5-pin and 16-pin connector cords from the power supply
unit.
4.
Wait, at least for five seconds after switch-ON before using the instrument.
5.
Do not touch the flash control switch of the power supply unit while the Xenon flash
lamp is discharging(flashing) or charging(recycling) and, furthermore, do not touch
the flash control switch together with the power switch.
6.
Because of the high voltage, ground the power supply unit in accordance with approved electrical standards and, preferably, have a competent electrician take care
of this matter. Furthermore, do not tamper with the power supply unit under any
condition.
7.
Check whether all electrical cords are properly connected before using the instrument.
Do not switch the light on and off unnecessarily, as lamp-life will be shortend.
8.
Grip the connector or the plug, when disconnecting the connector cord, and never
pull on the cord itself.
9.
Use the instrument in a clean, dry and, preferably, air conditioned room, without
direct sunlight. Avoid rooms which are dusty, have drafts, are damp or in which
direct sunlight falls on the instrument.
10. Do not touch the lens surface directly with your fingers or, for that matter, with any
hard object. Furthermore, do not use silicone-treated eyeglass cleaning cloth on it.
11. Use the exclusive finders supplied with the instrument, since they have been designed to cover the full field of view even at the wide-angle setting.
12. Use only the exclusive Auto Winder attachment supplied with the instrument. Auto
Winder attachments supplied with previous TOPCON retinal cameras are not compatible.
Retain this manual after you have read it and keep it close at hand for future reference.
CONTENTS
1. NOMENCLATURE AND FUNCTIOS
.
2. ASSEMBLING THE INSTRUMENT
1) Unpacking the Instrument
2) Checking the Primary Voltage
3) Checking the Plug of the Power Cord
4) Installing the Table
5) Assembling the Instrument(model TRC-W)
6) Assembling the Instrument(model TRC-WT)
7) Connecting the Electrical Cord
7
7
7
8
8
8
8
9
3.
BASIC OPERATING PROCEDURES
1) Attachment of Camera Body to the Optical Head
2) Film Loading
3) Unloading the Exposed Film .. ·················································
4) Adjustment of the Eyepiece······························· .. ··············
5) Adjustment of the Instrument
6) Use of the Diopter Compensation Lever
7) Use of the Internal Fixation Target
10
10
10
11
11
12
13
13
4.
PROCEDURES FOR TAKING RETINAL PHOTOGRAPHS .. ········· .. ·······················
1) Preparations········
2) Pointers on Taking Retinal Photographs
3) Photography with 35mm Color Film······· .. ············· .. ··········· .. ········· .. ······
4) Fluorescein Photography with Black-and-White Film
5) Retinal Photography with the Polaroid Camera Attachment
14
14
14
14
16
17
5.
EXCHANGE OF LAMPS AND FUSE
1) Main Illumination Lamp
2) Xenon Flash Lamp
3) Annular Fixation Target Lamp·············· .. ···································
4) Exchange of the Main Fuse
19
19
19
19
20
6. SPARE PARTS
··· .. ······· .. ·· .. ·· .. ······· .. ···· .. ····20
7. CARE AND MAINTENANCE
21
8. SPECiFiCATIONS.. ··················· .. ··························· .. ······················· .. ·· .. ·.. ···· .. ···23
9. ADDITIONAL OPERATING PROCEDURES
(Models TRC-W3 and TRC-WT3)
1) Checking the Primary Voltage
2) Attachment of the Camera Body to the Optical Head
3) Connecting the Electrical Cords·
4) Adjusting the Controls on the Motor Drive Attachment
6) Circuit Breaker
25
25
25
26
26
27
1. NOMENCLATURE AND fUNCTIONS
-----®
_-0
1\.------
--QD
3\.--------
®
~.~-®
--@
I~
Fig. 1
Fig. 2
2
Optical Head and Cross-Slide Base
changing lever
CD Angle
Used to change the angle of coverage to 20°,
30 and 45
@ Diopter compensation lever
®
Barrier filter holder
®
Excitation filter holder
®
Photography switching knob
FLUOR/COLOR
POLA
GREEN
OPEN
Push in fully to insert the barrier filter into the
optical path for fluorescein angiography. Must
be pulled out until a white line can be seen, when
not required.
Also push in fully to insert the excitation filter
into the optical path for fluorescein angiography.
The illumination for the observation system is
simultaneousdy increased to its maximum brightness. Must also be pulled out until a white line is
visible, when not required.
Has four settings, including one blank opening
which can be used for inserting a filter of user's
choice, to match the type of photography
planned, as follows:For normal 35mm color photography and color
fluorescein photography.
For Polacolor photography.
For red-free photography.
A blank setting which can be used for fitting a
filter required for specialized photography.
Fig. 3
3
® Internal
fixation target mount
(j) Focusing wheel
®
For connection of the spiral cord from the Auto
Winder Attachment(or the optional Motor Drive
Attachment when it is being used).
® Cable release socket
For use with the optional Polaroid Camera Attachment Type PA-4, with the double-locking
end of the double cable release being connected
to this socket.
@ Zero resetting lever
Used for resetting the four digit electromagnetic timer to zero(OOOO).
For inserting a plastic data plate on which perti(jJ) Plate insertion slot
nent information is hand-written with a marker
pen, for photographing together with the retinal
image and the time or frame number.
@ Optical head fixing lever(Model TRC-WT)
@ Chin-rest
For holding the plastic data plate when it is not
@ Plate holder
inserted in the plate insertion slot.
® Starter section attachment screws
@ Synchro-flash connector
Used for connection of the synchro-flash cord
from the camera body when the Auto Winder
Attachment or optional Motor Drive Attachment
is not being used.
@ Main lamp socket
@ Main lamp locking ring
Must be loosened for detachment of the main
lamp socket, when exchanging the main lamp.
@ Optical head fixing knob
Simply depressed to release the focal plane shut@ Release button
ter in the camera body for taking flash-illuminated
retinal photographs.
® Control lever
@ Elevating wheel
Depressed to switch the counter to timing opera® Timer switch
tions, and shows the time from 0000 to 999.9
seconds, in 0.1 second increments. The timers
operation is suspended when the switched is depressed a second time.
When the timer switch is not depressed, the number of frames exposed is photographed in one
frame increment each time the shutter is released.
@ Base fixing screw
Used for connection with the electronic flash
® Connector
connector on the Electric Flash Device FD-30.
® Chin-rest adjusting wheel
May be adjusted with the the adjustment lever@
® Annular fixation target
for the proper focusing distance of the patient's
@ Head-strap
eye.
Output connector
4
Camera and Auto Winder
9 Eyepiece
®J Film winding lever
Used for manual film winding and shutter charging operations.
I Rewind crank
@ Back cover lock
3 Solenoid release
®
Is screwed into the cable release socket of the
shutter release button(on t he camera body) for
activating the focal plane shutter when the Auto
Winder is attached. Must be detached for use of
the optional Motor Drive Attachment or for
manual operations.
Rewind button(camera)
5 Finder catch
6 Rewind button(Auto Winder)
3 Auto Winder switch
8 Red lamp
Should be switched OFF when auto-winding is
suspended midway in operation, with the red
lamp@) lighting up to warn that operation has
been suspended. Further operations, winding or
rewinding, should be continued manually, with
the film winding lever.
Illuminates when auto-winding is suspended
while in operation, usually indicating that there
is no more film to advance; but may illuminate
when film is catching and cannot be advanced.
32
Fig. 4
@f------ ..
~
Fig. 6
5
34
Fig. 5
Elcetronic Flash Device FD-30
@ Power switch
@ Illumination control switch
® Flash
4
control switch
Readylight
Used for adjusting brightness of the observation
system illumination, by the continuous adjustments of adjusting the input voltage from 3 to
8 volts.
Used to adjust the intensity of the electronic
flash illumination, in nine steps, from 18 to 300
wattseconds, or 18, 25, 36, 50, 75, 100, 150,
200 and 300WS.
Lights up when the electronic flash is fully charged for the next exposure.(Recycling time changes
from 0.4 sec. in the 18 to 150WS range to 0.9
sec. in the 200 to 300WS range.)
@ Voltage selector/fuse holder
Ell
•
Fig. 8
6
2. ASSEMBLING THE INSTRUMENT
1) Unpacking the Instrument
The TOPCON Variable-Angle Retinal Camera, Model TRC-W, is usually packed in
six packages for shipment abroad, which means that the instrument is disassembled
and packed carefully to protect the instrument from any damage.
Be extra careful when unpacking the cases. Locate all cases with their top side up and
open up the top of the case first. Take out the contents very carefully and do not drop
them as they can be damaged beyond repair.
Once everything has been unpacked, check the contents against the following list:base
1 set
1 each
® Camera body mount cap
1 each
@ Table
1 each
® Roller bars
2 each
® Rail covers
2 each
(j) Chin-rest section
1 each
® Electronic Flash Device FD-30
1 each
® Type AMW camera body
2 each
® Finder
2 each
(j]) Auto Winder attachment
1 each
@ Auto Winder solenoid release
1 each
@ Synchro-ftash cord
1 each
® Shutter release connector cord
1 each
@ Observation main lamp
1 each
(j]) Fixation target lamp
1 each
@ Fuse( 1 5A or 8A, as the case may be)
1 each
@ Plastic data plates
5 each
(j]) Chin-rest pads
1 pack
® Rubber-ball air blower
1 each
@ Plastic dust cover
1 each
@ Instruction manual
1 each
There may be minor differences from the above list, depending on the market. In
other words, the Auto Winder and its solenoid release are not included for some
markets, while the Internal Fixation Target is included as a standard accessory for
other markets. And, although two AMW camera bodies are normally supplied with
the instrument, some markets get one AMW and one AMW-FL camera body each.
Therefore, always check against the standard set composition for your market.
CD Optical head and cross-slide
® Objective lens cap
2) Checking the Primary Voltage
Before assembling the instrument, first check whether the pr imary voltage of the
instrument matches that of the line current.
Check the voltage selector fuse holder@ on Electronic Flash Device FD-30 and see
what voltage is set, i.e., what voltage is seen in the opening on the rim of the voltage
selecter. If the voltage set is not suitable, simply unscrew the fuse holder in the center,
pull out the voltage selector and reset it so that the required voltage is exposed in the
opening of the rim.
Normally, the instrument is set for the required voltage, at the time of final inspection
and, therefore, this adjustment should not be required.
If the instrument purchased has a fixed primary voltage of AC 120V, no adjustment
will be possible.
Since a 15 ampera fuse is used for the 100-120 volt range and an 8 ampere fuse
for the 200-240 volt range, check whether the fuse is also suitable when the above
adjustment has been made.
7
3)
Checking the Plug of the Power Cord
Check wheather the plug connected to the end of the power cord matches the receptacle from which the power is to be taken. If not, exchange it for a suitable one. Or, if
the plug has not been att ached because of special regional requirements, please connect a suitable one.
In the above cases, please note that of the three wires in the power cord, the grounding(earthing) wire is either green-colored or a bias-striped yellow and green colored
one.
4)
Installing the Table
Install the table on top of the TOPCON Adjustable Instrument Table, Model AIT-3,
which should also be purchased at the same time, if not already available.
Simply unscrew four attachment bolts from the Model AIT-3 and use them to fix
the table on top of the elevating mechanism.
5) Assembling the Instruments(Model TRC-W)
Simply place the cross-slide base section on top of the table, with the outrigger
rollers aligned on top of the toothed rails.
Next, fix the roller bars securely in place on the table surface, over the outrigger
rollers, and then insert the rail covers in place over the rails.
Next, attach the chin-rest section to the table, with three attachment screws.
\
Fig. 10
Fig. 9
6) Assembling the Instrument(Model TRC-WT)
The arm section and optical head of the instrument are separated from the base section, as
well as from each other.
Therefore, after placing the base section on the
table and inserting the rail covers in place over
the rails, locate the end of the lower arm over
the short upright column on the base, while
aligning four screwholes on the arm with four
screwholes on the column. Then, fix the arm to
the column with four attachment screws.
Next, while supporting the optical head, align
four screwholes on the forward end of the optical head with four screwholes on the attach-
8
Fig. 11
ment bracket, which is connected to the upper
arm section. When aligned, fix securely with
four attachment screws.
•
The screws should be lightly tightened at the
beginning, and only tightened securely and with
equal force after ascertaining that the attachment is properly aligned.
Finally, attach the chin-rest section to the table,
with three attachment screws.
Fig. 12
7)
Connecting the Electrical Cords
First, connect the two-pin connector on the end of the spiral cord from the optical
head to the connector at the base of the chin-rest section
Next, connect the 5-pin and 16- pin connector cords from the optical head to 5-pin
and 16-pin connectors on the rear surface of Electronic Flash Device FD-30.
Then, connect the connector@) on the side of the base section with the electronic
ftash connector on the rear surface of Electronic Flash Device FD-30, using an exclusive 5-pin connector cord.
Finally, connect the spiral connector cord from the Auto Winder Attachment to the
output connector@.
9
3. BASIC OPERATING PROCEDURES
1) Attachment of Camera Body to the Optical Head
(1)
First, attach the view finder on the camera body, by sliding it in from the back
cover side until it clicks into place and catches securely.
To remove, simply depress the finder catch@) and slide the finder out towards
the back cover ride.
Use only the exclusive view finders supplied with the instrument, since they have
been designed to cover the full field of view even when the instrument is set to
the 45° setting. View finders supplied with previous TOPCON retinal cameras
will only prove effective for the standard 30° and narrow 20° fields.
(2)
Check the synchro-switch on the base of the camera body and set it to the FPsetting.
(3)
Next, attach the Auto Winder attachment to the camera body.
First, unscrew the DRIVE cover on the base of the camera body if it should be
covered, and this will expose the motor drive shaft. Next, align driving claw and
attachment screw of the Auto Winder with the motor drive shaft and the tripod
socket on the base of the camera body. When properly aligned, screw the attachment screw in the clockwise direction and attach the two.
If the driving claw and motor drive shaft are not engaged, at this time, proper
attachment will not be possible and, therefore, simply stroke the film winding
lever@) so that the two are properly engaged.
The Auto Winder can be detached by simply unscrewing the attachment screw.
NOTE:
Only the exclusive Auto Winder attachment, supplied with the instrument,
should be used. Auto Winder attachments supplied for previous TOPCON retinal
cameras are not compatible and cannot be used.
(4) Screw the solenoid release@) into the cable release socket of the shutter release
button on the camera body and connect the other end to connector@.
NOTE:
The solenoid release is not supplied, unless specifically ordered, when the Auto
Winder attachment is purchased as an optional equipment, separately from the
inslrument.
(5) Attach the camera body to the optical head mount.
Line up red dots on the camera body ftange and the optical head mount. Then,
revolve the camera body in the clockwise direction until the locking lever catches
and the camera body is securely attached.
To detach, depress the locking lever inwards and then revolve the camera body
in the counter-clockwise direction until it can be pulled out of the optical head
mount.
Always lock the optical head fixing knob@(and fixing lever @, in the case of the
Model TRC-WT) before attachment or detachment.
2}
Film Loading
Film can be loaded(and unloaded) in the camera body with the Auto Winder attached,
although some users may find it easier to do so with the camera body detached from
the optical head.
(1)
Open the back cover of the camera body, by push-turning the back cover lock@.
10
The back cover will spring open if it is not being pressed.
(2)
Pull up the rewind knob fully.
(3)
Place a fresh film cartridge in the empty film chamber and push the rewind knob
back in to engage the film cartridge.
If necessary, rotate the rewind knob slightly so that the two engage.
(4)
Pull out the leading end of the film about 15 centimeters or so and insert it into
one of the multi-slots on the take-up spool.
(5)
Revolve the serrated flange of the film take-up spool so that the film perforations
at the top and bottom fully engage the film transport sprocket teeth.
(6) Once the perforations are fully engaged, close the back cover, by pushing it in
until it catches and is locked securely.
(7) Rotate the rewind knob in the arrow-indicated direction slowly, to take up any
slack in the loaded film.
Then, stroke film winding lever@ until it makes a full stop.
At the same time, check whether the rewind knob is rotating counter-clockwise
which will show that the film is being advanced properly. (If not, the film is not
caught on the take-up spool and operations must be repeated from (4) preceding.)
(8)
Depress the release button@ and then release pressure. A blank shot will be
taken. Depress the release button once more which will normally take care of
any frames which may have been exposed during film loading. If film is being
loaded with the camera body detached from the optical head, press the shutter
release button on the camera body.)
3) Unloading the Exposed Film
If there are no more frames to expose on the film loaded in the camera body, the Auto
Winder will stop auto-winding operations(even midway) because the attachment will
not be able to advance the film anymore. The red lamp@ will stay illuminated, indicating that the auto-winding operation is continuing; therefore, turn off the auto
winder switch@).
When the attachment is not being used, the action of the film winding lever@ will
become heavy. Therefore, check the exposure counter which should confirm the
fact that there are no more frames to expose.
It may prove easier to unload the exposed film with the camera body detached from
the optical head.
(1)
Depress rewind button@ to depress rewind button@ on the camera body, or
depress the latter directly if the Auto Winder is not attached.
(2)
Unfold the rewind crank®) on the rewind knob and turn in the arrow-indicated
direction or clockwise.
(3) ReWind smoothly and evenly, until tension decreases which will indicate that
the film has slipped off the take-up spool.
Do not rewind the film completely back into the cartridge but leave the leading
end extending out from the cartridge, as it will prevent light leaking into the
cartridge.
(4) Open up the back cover of the camera body. Pull up the rewind knob fully. Tilt the
camera body slightly so that the cartridge falls out(into your hand).
4) Adjustment of the Eyepiece
11
The eyepiece@ must always be adjusted for the user's eyesight, as otherwise the
instrument will not be focused properly on the retinal surface. Place a white sheet of
paper before the objective lens for this purpose.
First, draw out the eyepiece completely by rotating its adjustment ring in the counterclockwise direction, which will make the cross-hairs appear completely blurred.
Next, rotate the adjustment ring slowly in the clockwise direction while checking the
cross-hair image in the field of view. Stop when the image is sharply focused.
Should the adjustment ring be rotated past the point of sharpest focus, start all
over from the beginning, as this should prove much easier and faster than moving
the ring back and forth around the point considered to be in sharpest focus.
IMPORTANT
When properly adjusted, the crosshairs must be seen distinctly as double
cross-hairs.
Furthermore, when focusing, both
cross-hair image and retinal image
must be seen distinctly at the same
time.
Fig. 13
5) Adjustment of the Instrument
(1) C ross-Slide Base
The base fixing screW@ must be loosened to make coarse adjustments of the
cross-slide base with the control lever@. The control lever is simply held upright
and moved forcefully in the required direction over the gliding plate of the table,
in this case.
Always tighten the base fixing screw, when the base is positioned, as required.
For fine cross-slide adjustments of the base, up to 9mm, simply tilt the control
lever slightly in the required direction.
Keep the gliding plate clean and smooth at all times to insure smooth floating
movements.
(2) Optical Head
To raise or lower the optical head, in relation to the cross-slide base, simply
rotate the elevating wheel@.
Clockwise rotation will raise it and counter-clockwise rotation will lower it.
To swing the optical head laterally or in a horizontal plane, loosen optical head
fixing knob@) which will permit manual rotation up to 30 degrees of the arc, from
the straight forward position. When positioned, as required, tighten the fixing
knob securely.
To swing the optical head vertically up and down, loosen the optical head fixing
lever@ of Model TRC-WT, which will permit manual rotation up to 15 degrees
of the arc, from the horizontal plane. When positioned, retighten the fixing
lever securely.
In both cases, the optical head is rotating around the center of the optical axis
on the corneal front surface.
(3) Chin-Rest
The chin-rest is raised or lowered with the chin-rest adjusting wheel@. Clock-
12
wise rotation will raise it and counter-clockwise rotation will lower it.
6) Use of the Diopter Compensation Lever
The diopter compensation lever® has four settings, or a white ring(O)' a minus( -)
mark, a plus(+) mark and an ANT setting.
The white ring setting is without compensation for use with the non-emmetropic
eye, and its vertex power range is -10 diopters through zero to +6 diopters. The
minus setting shows that a minus compensation lens has been inserted, for the
strong myope, with the vertex power range extending from -7 diopters to -25
diopters.
The plus setting shows that a plus com pensation lens has been inserted, for the
strong hyperope, with the range changing to +6 diopters to +25 diopters. The
ANT setting shows that a compensation lens has been inserted for photographing
the ocular anterior.
The instrument must be refocused when the diopter compensation lever is adjusted.
7) Use of the Internal Fixation Target
When the internal fixation target is supplied with the instrument(otherwise it is
an optional accessory), it can be fixed on the internal fixation target mount@.
First, unscrew the slotted cover of the mount@ with a coin or similiar object. Then
screw in the accessory in place of the cover. (Remember to keep the mount cover
for future use.)
The internal fixation target can be adjusted in or out, right or left and back and forth,
for pincpointing the fixation spot or area, as checked in the field of view.
13
4. PROCEDURES FOR TAKING RETINAL PHOTOGRAPHS
1) Preparations
(1)
Use a dark room.
(2)
Dilate the patient's pupil completely about 20 minutes before photography, with
a few drops of Mydriatic, etc. If the pupils are not dilated to more than 7mm in
diameter, there will not be sufficient illumination.
(3) Turn ON the power switch@W and check whether the main observation lamp and
fixation target lamp are illuminated or not.
(4)
Next, depress the release button@) and make several blank shots, to check
whether there is flash illumination each time.
(5)
Next, adjust the eyepiece to the user's eyesight.
(6)
Have the patient sit down properly before the instr ument and, if necessary, adjust the height of the chin-rest.
(7) Set the controls of the instrument, according to Table 1, depending on the type
of film being used and the type of photography.
2) Pointers on Taking Retinal Photographs
(1) To coincide the light beam proper ly to the patient's pupil, first move the optical
head in towards the patient's eye, i.e" move it in from the operator's side
towards the patient, and stop when the field of view is observed evenly illuminated.
Then, move it in further very slightly which will be the optimum position at which
the light beam will de properly coincided to the patient's pupil.
(2) When focusing the retinal image with the focusing wheels, it should be remembered that not only the retinal image but the cross-hairs must also be observed
sharply and distinctly in the field of view at the same time. Otherwise, the retinal
image will not be focused properly on the film plane.
(3) When changing the angle of coverage.
a)
It will not be necessary to refocus when changing the angle of coverage
from 20° to either 30° or 45°, if the retinal image has already been properly
focused at the 20° angle of coverage, and
b)
Flare will not occur when the angle of coverage is changed from 45° to either
30° or 20°, if the light beam has been properly coincided to the patient's
pupil at the 45° angle of coverage.
(4) In order to have the patient fixate the annular fixation target properly, i.e., coincide the patient's line of sight to the fixation target properly, directing the light
beam from the fixation target into the patient's pupil.
At the same time, in order to eliminate accomodation so that the patient can
properly focus on the fixation target, adjust the annular fixation target with its
adjustment lever@ so that the target is located at the far point of the patient's
eye.
3) Photography with 35mm Color Film
(1) As in Table 1, adjust the flash control switch, photography switching knob and
counter illumination plate, based on the ASA film speed of the film loaded in the
camera body.
(2) After adjusting the dioptric power of the eyepiece to the user's eyesight, align
the optical head and, therefore, light beam to the patient's pupil and, then, focus
the retinal image.
14
Table 1-Exposure Guide for TRC-W /WT /W3/WT3
Type of Photography
Polacolor
Polaroid
Fluorescein
Red-Free
Photography
Black-&-White
Photography
Photography
35mm Color Photography
Control Settings
ASA Film Speed
64
100
160
200
75
3,000
400
400
36WS
25WS
300WS
25WS
300WS
25WS
POLA
POLA
FLUOR/COLOR
GREEN
(J1
Flash Control Switch
Photography Switching Knob
75WS 50WS
FLUOR/COLOR
Note: The ftash control switch setting noted above is for the average retinal area,
(3) Follow Instructions in "2)Pointers on Taking Retinal Photographs" and take the requrred
photographs.
(4) Should the Auto Winder Attachment get out of order while
taking retinal photographs, simply detach it and manually continue with the release button on
the control lever, while using the
film winding leved"U to advance
the film and to charge the shutter.
In this
case, however,
the
synchro-ftash cord must be used
to connect the ftash socket(on
the rewind side of the camera
body) with the socket on the
starter section(below the opti~
cal head) The procedure IS only
recommonded
use.
(5)
for
emergency
Fig. 14
The barrIer hlter must be completely out of the optical path,
In
the above case, which can be confirmed when the white line is visible on the
bamer filter holder 3 .
4) Fluorescein Photography with Black-and-White Film
(1) Set controls according to Table 1.
(2)
Next, make the same adjustments, as noted for color retinal photography, and
focus the retinal image properly.
(3)
Depress the timer switch 23 at the same time an intravenous Injection of Huarescem 15 given to the patient
(4)
Insert the excitallOn hlter holder 4 and barner filter holder 3 Into the optical
path, by pushing both In fully.
The main lamp Illumination Will be increased automatically to Its maximum bright-
ness when the excitation filter holder is pushed in and Will be decreased to its
former level when the holder is pulled out fully
(5)
Development of the film
Development of the film, In the case of ftuoresceln retinal photography, should
differ according to conditions and, therefore, the film should be developed under
inspection.
The follOWing IS a gUide for developing films under average conditions'
Film
Kodak Tri-X Pan(ASA 400)
KOnldor Super(Konlshrroku)
b) Developer
c) Development
Tank development with developer temperature 20 C and
13 to 18 minutes of development
d) Fixing time
10 to 20 minutes.
More than 30 minutes
e) Washing time
NOTE:
The developer, in the above, can be replaced with a special fine grain developer
E-24(Adox), In which case, developing time should be shortened to 10 to 15
a)
16
minutes.
(6) When using the optional Type AMW-FL camera body, which is for use exclusively
in ftuorescein retinal photography, the barrier filter holder~ should not be
pushed into the optical path, although other operations will be the same.
NOTE:
The Type AMW-FL camera body is supplied as one of the two camera bodies for
the instrument. for certain markets, but most markets are supplied with two
AMW camera bodies.
5)
Retinal Photography with the Polaroid Camera Attachment
(1) Use the optional Polaroid Camera Attachment. Type PA-4; other types of attachments should not be used on the instrument.
(2)
Connect the attachment on its exclusive attachment mount, on top of the instrument, as illustrated.
Fig. 15
Fig. 16
Fig. 17
17
(3) Attach the double-locking connector of the double cable release to the release
socket!]; on the optical head section while the other end should be connected
to the attachment.
NOTE:
Since the cable release socket!]; is utilized to place the reflex mi rror in the optical
path and thus divert it upwards to the Polaroid Camera Attachment, the double
cable release must be adjusted so that the cable release socket!]; is activated
before the shutter release on the attachment.
(4)
Connect the synchro-flash cord, as illustrated .
..
Fig. 18
(5)
Set controls as per Table 1.
(6)
Focus on the patient's retina.
(7)
Photographs are taken with the double cable release, in this case, with the cable
release being pushed in until the shutter of the attachment is released.
The shutter speed of the attachment should be set to 1/15 second and the
aperture opening to B.
(8)
Pull strongly on the white backing paper with the number printed on it(while
holding the attachment with the other hand). When the tab of the sensitized
paper also comes out with the white backing paper, pull strongly on the tab, too.
Start timing the development when the sensitized paper is pulled out.
See the instructions enclosed with the film regarding development of the film,
as well as instructions supplied with the accessory for attachment and operations.
18
5. EXCHANGE OF LAM PS AND FUSE
Lamps should be exchanged only after switching OFF the power switch.
1,)
Main Illumination lamp
(1) Loosen the main lamp locking ring@! and
pull out the lamp socket.
(2)
Exchange with the spare main lamp and
tighten the main lamp locking ring@! when
fully inserted.
Fig. 19
2)
Xenon Flash lamp
(1) Loosen the starter section attachment
screws@ and pull off the starter section.
(2)
e.
Grip the ftange of the Xenon ftash lamp firmly and pull straight upwards for detachment.
Fig. 20
(3)
Insert the replacement lamp by coinciding
the pins on the base of the lamp to the
sockets on the starter section and then push
in strongly.
Always grip the ftange of the Xenon ftash
lamp and never touch the glass bulb itself,
as fingerprints on the glass surface will
affect the light intensity and the lamp-life.
•
Fig. 21
(4)
Attach the starter section to the optical head, by coinciding the pins on the
former with openings on the bottom of the optical head side and then inserting
fully.
(5)
Finally, screw in the starter section attachment screws firmly.
3) Annular Fixation Target amp
(1) Loosen the knurl ed knob of the fixacion target slightly and detach the target
end, which will expose the lamp.( Do not turn the knob too much, as it will come
off.)
19
(2)
Grip the exposed lamp bulb and revolve it in
the counter-clockwise direction until it comes
off. Replace with a new lamp bulb, by revolving in the clockwise direction.
II
After exchanging the required. lamp, always
switch ON the power switch and check whether
the lamp is in working order.
Fig. 22
4) Exchanging of the Main Fuse
(1) First, switch OFF the power switch and disconnect the power cord.
(2)
Next, unscrew the fuse holder@ cover on
the rear of the power supply unit.
(3)
Pull out the exposed fuse and replace with a
new glass-shielded fuse of same rating, i.e.,
15 amperes in the case of 100-120V and
8 amperes in the case of 200-240V.
(4)
Replace the fuse holder cover and, at the
same time, check whether the voltage selector is also set to the required voltage, i.e.,
the required voltage is observed in the rim of
the voltage selector.
(5)
Fig. 23
Connect the power cord and switch ON the power switch. Check whether
electricity is being supplied to the instrument.
6. SPARE PARTS
When ordering spare parts, such as lamps, fuses, etc., please indicate the name of the
item, the part number and the quantity required, as well as the model that is being used.
Xenon ftash lamp
Part No. 404525501
Main lamp
Part No. 405101089
Fixation target lamp Part No. 403504211
15 ampere fuse
Part No. 404335054
8 ampere fuse
Part No. 404525109
Chin-rest pads
Part No. 403104082
20
7. CARE AND MAINTENANCE
(1) Keep the room in which the instrument is located as clean as possible, at all times.
Furthermore, keep the objective lens covered with its cap, and the instrument protected with its plastic dust cover, when it is not actually being used.
2)
Protect the lens surfaces, especially the aspherical lens surface of the objective,
from scratches, dust, dirt and or fingerprints, at all times.
When necessary, clean the lens surface by, first, blowing away dust or dirt with a
rubber-ball air blower or brushing with a soft, clean camel hair brush. If the lens
surface is still not clean, try wiping it gently with a lint-free clean cloth or a good
quality lens tissue. If necessary, dip very lightly in a mixture of ether and alcohol and
wipe in ever-widening circles from the center out. Wipe gently and do not rub under
any condition. If necessary, repeat, as many times as required but do not attempt
to rub it clean.
3)
Do not touch the reflex mirror of the exclusive camera body, especially with your
finger or a hard object. If the mirror surface is found dirty, try blowing the surface
clean with a rubber-ball air blower or resort to gentle brushing, but always blow or
brush the dust or dirt out of the camera body instead of in.
If absolutely necessary, clean the surface in the same manner as the lens.
4)
If the instrument is not being used for a long period, detach the Auto Winder and
store it separately.
In the above case, place covers on both the optical head mount and the camera body
mount, to prevent entry of dust and to protect the inner mechanisms.
Store the instrument in a dry, cool room, with freely circulating air(but not drafty or
windy).
Do not keep the shutter tensioned when storing the camera body but always depress
the shutter release button on the body.
This is because the springs should not be kept tensioned inside the camera body
for a long period.
5)
Clean the filter inside the optional Type AMW-FL camera body, when there is dust
on it, since such dust will be photographed together with the retinal image.(Otherwise, never touch the filter.)
(1) First, stroke the film winding lever(@).
(2)
Next, detach the bar "A" from the top of the camera body and insert it into the
opening "B".
(3)
Then, depress the shutter release button which will swing up the reflex mirror
and expose the filter to view, from the front side.(The camera body should be
detached for this purpose, with the back
cover also opened in order to expose the
rear side of the filter, too.)
(4)
Clean both surfaces of the filter with a
rubber-ball air blower or soft camel hair
brush. Be extra careful not to scratch the
filter surface, leave fingerprints, dirt or oil
on the surface and never leave brush hairs
inside the camera body.
(5)
Once the filter has been cleaned, advance
the film winding lever once more, detach
the bar "A" and replace it in its original
position. Then, press the shutter release
button once more.
21
Fig. 24
6) Cleaning the Gliding Plate and Rails
The gliding plate on top of the table, as well as the rails, must be cleaned from time
to time, in order to insure smooth movement of the cross-slide base.
Clean the gliding plate with a silicon cloth and the rails with a brush. If the former
is too dirty, clean it with a cloth soaked in a soapy solution or in detergent. In this
case, however, finish with a clean wet cloth and, finally, wipe dry with a clean cloth.
Clean the other plastic parts of the instrument in similiar manner.
7) Other Troubles
As long as the instrument is used properly, according to instructions, there should
be no other troubles, both optically and mechanically.
However, the mechanical moving parts may be affected after repeated usage over
a long period, in which case, the instrument should be sent out to a competent
optical repair shop, if available and depending on the nature of the trouble. Otherwise, contact the authorized dealer or our export office.
The moving parts will wear out faster if dust is allowed to be rubbed into them which
means that the instrument should be covered with its plastic dust cover when not
in use and, of course, the instrument should be used in a clean room.
Incidentally, if the instrument is tampered with in any way that could affect its
performance, or is remodeled, modified and/or adapted, or taken apart by inexperienced personnel, we cannot be held responsible for any problems which
may arise and/or we may not be able to help you repair the instrument.
22
8. SPECIFICATIONS
1.
2.
Angle of coverage
Working distance
45°, 30° and 20°, with manual switching.
45mm(objective lens surface-to-corneal surface)
3.
Area photographed
22mm diameter(on the 35mm film)
4.
Photographic magnifications
1.7 X at 45° ,
2.5 X at 30° , and
3.7x at 20°,
at zero diopter.
5.
Total observation magnifications
11 X at 45° ,
16.4x at 30°, and
24.4 X at 20° ,
at zero diopter.
6.
Diopter compensation range for patient's eye
setting
-10 to +6 diopter(w/o compensation);
+ setting
+6 to +25 diopters(with positive lens);
- setting
-7 to -25 diopters(with minus lens);
ANT
Ocular anterior photography range.
7.
Built-filters
For fluorescein photography
Interference filter.
Filter holder is exchangeable.
Green filter
Red-free photography
8.
Data photography
Number and name can be photographed coincidentally.
Four digit additive counter coupled to shutter
action.
Timer activated with push-button switch,
shows time from 0000 to 999.9 seconds, in
0.1 second increments, with counter being
switched out at the same time.
Patient's name photographed by inserting
plastic data plate with written information.
9.
Electronic Flash Device FD-30
Primary voltage
AC 100, 110, 120, 200, 220 or 240 volts,
with built-in voltage selector. (Fixed 120V
for certain markets.)
Frequency
50/60 Hz
Output rating(with 100V input voltage)
8V(max.) for observation illumination; DC
440V 300WS(in 9 steps) for flash illumination;
DC 15V 1OOmA for electromagnetic counter;
1.5V 1OOmA for fixation target lamp;
DC 15V 1A for moter drive attachment; DC
5.5V 1.3A for Auto Winder attachment.
DC 14V 2.5A for solenoid shutter release.
Flash recharging time(with 100V input voltage)
At 18-150WS
450ms or less.
At 200-300WS
900ms or less.
10. Base movements
Coarse
70mm longitudinally; 90mm laterally.
Fine
9mm cross-slide adjustments
11. Optical head swing
Up to ± 30° of the arc lateral swing(around
the center of the optical axis on the corneal
front surface); Model TRC-WT also has up
o
23
12. Optical head vertical travel
13. Chin-rest vertical travel
14. Weights
instrument
Electronic Flash Device FD-30
15. Dimensions
Instrument
Electronic Flash Device FD-30
16 Power consumption
to ± 15° of the arc vertical swing in similiar
manner.
1 5mm up; 15mm down
80mm
22.5 kgs.
26 kgs ..
560mm wide X 627mm high X 468mm deep
293mm wide X 191 mm high X 459mm deep
1.5KVA
Subject to changes in design and/or specifications, without advance notice.
24
9. ADDITIONAL OPERATING PROCEDURES
(Models TRC-W3 and TRC-WT3)
For those who have purchased the Models TRC-W3 and TRC-WT3, the following instructions must also be followed.
The Model TRC-W3 is basically identical to the Model TRC-W in most of its handling
procedures while the Model TRC-WT3 is identical to the Model TRC-WT, However
both Models TRC-W3 and TRC-WT3 are supplied with the Motor Drive Attachment
(in place of the Auto Winder Attachment) and Electronic Flash Device FD-1 OO(in place
of the Electronic Flash Device FD-30) and, therefore, require slightly different operating
procedures.
1) Checking the Primary Voltage
The Models TRC-W3 and TRC-WT3 must be used on single phase 200, 220 or 240
volts, within ± 5% of rating, and, furthermore, must be grounded properly, according
to your local electrical regulations.
The voltage set to Electronic Flash Device FD-1 00 can de checked with the voltage
adjuster bar, on its rear surface. If the voltage set to the instrument is not suitable,
loosen the winged nuts and set the voltage adjuster bar to the required setting. Then,
retighten the wi nged nuts.
2) Attachment of the Camera Body to the Optical Head
(1) First, attach the finger on the camera body.(Foliow instructions for Models
TRC-W and TRC-WT.)
(2) Check the synchro-switch setting and set it to the FP-setting.
(3)
Next, attach the Motor Drive Attachment to the base of the camera body.
First, unscrew the DRIVE cover on the base of the camera body which will
expose the film winding coupling disc for coupling with the Motor Drive attachment.
Next, place the spacer between the attachment and the camera body, by placing
it on top of the motor drive. Insert a pin on the attachment into an alignment
hole on the spacer.
Next, stand the shutter release coupling bar of the attachment up vertically and
slide it up along the front of the camera body so that the bottom edges of the
coupling bar slip under the shutter release button. The bar will catch firmly on
both sides of the shutter release button, when pushed up properly.
At the same time, see that the driving claw of the motor drive couples with the
film winding coupling disc and the attachment screw is lined up with the tripod
socket. Finally, screw in the attachment screw.(The spacer must be located between attachment and camera body, when the two are attached.)
(4) Stroke the film winding lever@ and check whether the motor drive is coupled
to the camera body.
(5) Check the stroke of the shutter release screw on the shutter release coupling
bar, by depressing the shutter release button near the base of the coupling bar.
If the shutter release screw does not activate the shutter release button on the
camera body, adjustment is required. Revolve the shutter release screw fully in
the counter-clockwise direction and do the same with its lock nut. Next, screw
the shutter release screw in slowly, while checking whether its extension is
satisfactory or not. When satisfactory, revolve the lock nut clockwise and fix the
25
stroke of the
shutter release screw.
(6) Finally, attach the camera body to the optical head.(Follow instructions for
Models TRC-W and TRC-WT.)
3) Connecting the Electrical Cords
First, connect the two-pin connector on the end of the spiral cord from the optical
head to the connector at the base of chin-rest section.
Next, connect the 5-pin and 16-pin connector cords from the optical head to the
5-pin and 16-pin connectors on the rear surface of Electronic Flash Device FD-1 00.
NOTE:
Use only t he exclusive 5-pin connector cord supplied with the Motor Drive Attachment, as former connector cords should not be used.
Then, connect the connector cord from the Motor Drive attachment to the output
connector@.
Next, connect the synchro-ftashsocket on the camera body with the synchro-ftash
connector.
And, if the optional foot switch is being used, connect its connector cord with its
connector on the Electronic Flash Device FD-1 00.
4) Adjusting the Controls on the Motor Drive Attachment
After properly attaching the camera body to the optical head and connecting the
cords, as well as loading film, make the following adjustments, as required:-
(1)
Exposure Indicator
The exposure indicator on the right rear rurface of the motor drive attachment
must be adjusted for the number of exposures available on the film loaded in the
camera body, since motor drive operation will be suspended automatically when
the subtractive-type exposure indicator reaches zero.
Push-turn the milled wheel of t he exposure indicator and set the index to 20 or
36(more frames cannot be exposed without using a bulK film magazine).
(2) Timer Dial
The timer dial on the rear side of the motor drive attachment(over the S-C
Switch) can be set for the required firing rate, when sequential frames are being
exposed continuously.
There is a choice of 1, 2 and 3 frames per second.(When used with Models
TRC-W and TRC-WT, in place of their Auto Winder Attachment, the 3 fps firing
rate cannot be used, although it can be set.)
(3) S-C Swich
The S-C switch can be set for either single frame exposures(S) or continuous
shooting(C), with the latter used nor mally for ftuorescein angiography.
5) As for taking retinal photographs with th Model TRC-W3 and TRC-WT3, follow
instructions on the preceding pages for the Model TRC-W and TRC-WT, in general,
but with control settings as per Table 2 for ftuorescein angiography.
Incidentally, the optional Motor Drive Attachment can also be used with Model
TRC-W and TRC-WT(but only at 1 and 2 fps firing rates), in which case, control settings should be as per Tadle 3 which also follows.
In any case, when push-development is required, always develop under inspection.
26
NOTE:
The Auto Winder attachment is also available optionally for use with Models
TRC-W3 and TRC-WT3 but the solenoid release(which is supplied with the Models
TRC-W and TRC-WT when the Auto Winder is a standard accessory) is only available optionally, which means that it, too, must be specifically ordered.
6) Circuit Breaker
Electronic Flash Device FD-1 00 has a circuit breaker in place of the fuse.
This means that the circuit is always broken, when there is a surge of current in
excess of the capacity of the Electronic Flash Device, which can be closed by moving
the lever of the circuit breaker ON.
However, if the reason for the power surge is not rectified, the circuit breaker will,
of course, operate once more to protect the Electronic Flash Device.
Therefore, always check for the cause before closing the circuit.
27
Table 2-Exposure Guide for Fluorescein Angiography(Models TRC-W3 and TRC-WT3)
Type of film
Black-and- White
Control Settings
ASA Film Speed
N
(Xl
Flash Control Switch
Photography Switching Knob
Firing Rate
Color Transparency
400
400
160
300WS
300WS
36WS
FLUOR/COLOR
FLUOR/COLOR
FLUOR/COLOR
3 fps
2 fps
1 fps
Note: (1) The flash control switch setting noted above is for the average retinal area.
(2) ASA 400 black-and-white film is the equivalent of Kodak Tri-X Pan.
(3) ASA 160 color slide film is the equivalent of Kodak High Speed Ektachrome, Daylight.
Table 3-Exposure Guide for Fluorescein Angiography(Models TRC-W and TRC-WT)
Type of film
Black-and- White
Control Settings
ASA Film Speed
Flash Control Switch
Color
400
400
160
300WS
150WS
36WS
N
CD
Photography Switching Knob
Firing Rate
Push-Develop for ASA
Note: (1)
(2)
(3)
(4)
FLUOR/COLOR
FLUOR/COLOR
1 fps
2 fps
800
The above is based on the use of the optional Motor Drive Attachment.
The flash control switch setting noted above is for the average retinal area.
ASA 400 black-and-white film is the equivalent of Kodak Tri-X Pan.
ASA 160 color slide film is the equivalent of Kodek High Speed EKtachrome, Daylight.
FLUOR/COLOR
1 fps
~
TOKYO OPTICAL CO., LTD.
75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174, Japan.
Telex: 0272-2384 Phone: 03-967-1101
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Telex: 134338 Phone: 201-261-9450
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Telex: 23783 Phone: 127279
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Telex: 8531981 Phone: 02154427061-6
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International Plaza, 10 Anson Road, No. 23-12, Singapore 0207.
Telex: 26622 Phone: 2218824
Printed in Japan
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