Keeler Applanation Tonometer (KAT) Instructions for use Home Back

Keeler Applanation Tonometer (KAT) Instructions for use Home Back
Keeler Applanation Tonometer (KAT)
Instructions for use
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Contents
1.
7.3
Introduction
Preparing the Slit Lamp instrument for examinations
at 10 x magnification
1.1
Brief description of the instrument
1.2
Intended use / purpose of instrument
7.4
1.3
How the intraocular pressure is measured
7.4.1 Instructions to the patient
1.4
Advantages of using a Goldmann Tonometer
7.4.2 Taking the measurement
Using the instrument/ taking a measurement
2.
Symbols used
8.
Problem solving
3.
Safety
9.
General information and suggestions concerning measurement
3.1
Standards applied
10. Astigmatism
3.2
Warnings and Cautions
11. Routine instrument maintenance
4.
Cleaning and disinfection instruction
11.1 Check procedure with the measurement drum set to 0
4.1
Cleaning Tonometer body
11.2 Check procedure with measurement drum set to 2
4.2
Disinfecting the Tonometer prisms
11.3 Check procedure with the calibration arm set to 6
5.
Tonometer Prism field check
12. Servicing and calibration
6.
Name of components of R type and T type KAT
13. Specifications
7.
Measurement procedure
13.1 Transport, storage and working conditions
7.1
13.2 Technical specifications
Installation on to the Slit Lamp
7.1.1 Keeler Applanation Tonometer (T type)
14. Accessories and warranty
7.1.2 Applanation Tonometer ‘Keeler Fixed’ (R type)
15. Contact information
7.2
Preparing the patient
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As part of our policy for continued product development we reserve the right to amend specifications at any time without prior notice.
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2
1. Introduction
Thank you for choosing this Keeler Applanation Tonometer (KAT).
1.2 Intended use /
purpose of instrument
Please read this manual carefully before using your KAT.
The Keeler Applanation Tonometer is
This will ensure the safety of the patient and your confidence
indicated for measuring intraocular pressure to
in the measurements it provides. This manual should be stored
aid in the screening and diagnosis of glaucoma.
safely for future use.
1.1 Brief description of the instrument
The Keeler Applanation Tonometer (KAT) is
an accessory item for most ‘Tower Illumination’
The Keeler Applanation Tonometer operates according to the
type of Slit Lamps and thanks to its versatility,
“Goldmann method”, by measuring intraocular pressure from the
the KAT Tonometer can be mounted on
force required to flatten (applanate) a constant area (3.06mm) of
and used with slit lamps produced by
the cornea. A special disinfected (or single use) prism is mounted
many manufacturers.
R type (fixed) KAT on Slit Lamp
on the Tonometer head and then placed against the cornea.
The KAT should be used only by trained personnel. USA Federal
The examiner, using a slit lamp biomicroscope at 10x
law restricts this device to sale by or order of a physician.
magnification, with a blue filter views two fluorescing green
semi circles. The force applied to the Tonometer head is then
The manufacturer declines any and all responsibility and warranty
adjusted using the dial until the inner edges of these green
coverage should the instrument be tampered with in any manner
semi-circles meet.
or should routine maintenance be omitted or performed in
manners not in accordance with these manufacturer’s instructions.
Because physical contact with the cornea takes place it is
necessary to apply to the patients cornea a suitable topical
anaesthetic.
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1. Introduction
1.3 How the intraocular pressure is measured
1.4 Advantages of using a Goldmann Type Tonometer
The cornea is flattened by an acrylic measuring prism on a
• Intraocular pressure can be measured during routine
ring support at the end of the Tonometer sensor arm assembly.
It is flat with smooth or rounded margins to avoid any damage
examination with the Slit Lamp.
• The standard deviation among single measurements is
approximately <_ 0,5 mmHg.
to the cornea.
• The value is expressed in mmHg and is read directly on the
The measuring prism is brought into contact with the patient’s
eye by moving the slit lamp forward. The measurement drum is
instrument.
• Scleral rigidity need not be taken into consideration because
then turned to increase the pressure on the eye until a continuous,
the small volume moved (0,56 mm3) increases intra-ocular
uniform applanated surface 3.06 mm in diameter (7,354 mm² area)
pressure by only about 2.5%.
is obtained. The doubling prism divides the image and presents
the two opposing semicircular halves at 3.06mm (see section 7.4.2
• There are no difficulties as regard standardisation and
calibration.
Measurement procedure for further details).
Position of the
measurement drum
Force
mN
Pressure
kPa
mmHg
1
9.81
1.33
10
2
19.62
2.66
20
3
29.43
39.9
30
4
39.24
53.2
40
5
49.05
66.5
50
The intra-ocular pressure, expressed in
6
58.86
79.8
60
mmHg, is calculated by multiplying the
7
68.67
93.1
70
drum measurement by ten (for conversion
8
78.48
10.64
80
from one unit to another).
Relationship between the pressure of the
measurement drum and the force and
pressure on the applanated surface.
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2. Symbols used
Read user instructions for Warnings, Cautions and
additional information
The CE mark on this product indicates it has been
0088
tested to and conforms with the provisions noted
within the 93/42/EEC Medical Device Directive
Consult instructions for use
Manufacturers name and address
Keep dry
Fragile
Material suitable for recycling
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3. Safety
Use this instrument only in strict accordance with the
instructions contained in this manual.
3.1 Standards applied
The Keeler Applanation Tonometer is designated as Class I
non-invasive measuring device under EC Directive 93/42/EEC for
medical equipment products.
The CE mark on this product indicates it has been tested to
and conforms to the provisions noted within the 93/42/EEC
Medical Device Directive.
It also complies with ISO 15004-1:2006 ophthalmic instrumentsFundamental requirements and test methods and BS EN ISO
14971:2007 Medical Devices - Application of Risk Management
to Medical Devices.
Classification
CE Regulation 93/42 EEC: Class 1m (Measuring function)
FDA:
Class II
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3. Safety
3.2 Warnings and Cautions
• The instrument should be used only by qualified and specially
trained personnel.
• The owner of the instrument is responsible for training
personnel in its correct use.
• Accuracy of applanation IOP measurements is known to be
affected by variations and changes in corneal rigidity due to
differences in corneal thickness, intrinsic structural factors or
corneal refractive surgery. It is recommended that these
factors are considered during IOP measurement.
• Do not use the product if visibly damaged and periodically
inspect for signs of damage or misuse.
• The contact surface of this prism should be checked before
each use for damage and discarded if damage is found.
• We recommend that the prism is not used when it becomes
more than two years of age as, after this time it is possible
that body or sterilising fluids may seep inside leading to
possible sterility and cross contamination issues.
• Only decontaminate / clean in accordance with method given
• Keeler Applanation Tonometers should be serviced and
calibrated annually. Any servicing or repairs/modifications
should only be carried out by Keeler Ltd. or by suitably
trained and authorised distributors. The manufacturer declines
any and all responsibility for loss and/or damages resulting
from unauthorised repairs; furthermore, any such actions will
invalidate the warranty.
• Never use the instrument if the ambient temperature,
atmospheric pressure, and/or relative humidity are outside the
limits specified in this manual.
• Should the instrument suffer shocks (for example, should it
accidentally fall), follow the check procedure outlined in the
“Calibrations” section 12 ; if necessary, return the
instrument to the manufacturer for repair.
• Use only the listed accessories in conjunction with the
instrument; use said accessories only in accordance with the
procedures set forth in the instruction manuals.
• Always carefully observe the safety rules and other
precautions published herein.
in Cleaning Section 4 of this instruction manual.
• Use only cloths dampened with water to clean the
Applanation Tonometer body. Do not use corrosive products
or alcohol.
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4. Cleaning and disinfection instruction
4.1 Cleaning Tonometer body
• Only manual non-immersion cleaning as described should be
used for this instrument.
• Wipe the external surface with a clean absorbent, non-shedding
cloth dampened with a water / detergent solution (2%
detergent by volume) or water / isopropyl alcohol solution (70%
IPA by volume).
• Use caution to ensure cloth is not saturated with solution.
• Surfaces must be carefully hand-dried using a clean
non-shedding cloth.
• Safely dispose of used cleaning materials.
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4. Cleaning and disinfection instruction
4.2 Disinfecting the Tonometer prisms
Always disinfect the Tonometer prisms before use. Hand hygiene
4
the prism in running water
10-30
mins
for between 10 and 30
must be considered to prevent any contamination.
1
Rinse the disinfectant from
minutes.
Carefully remove the
Tonometer prism from
the prism holder.
2
5
Wash the Tonometer prism
under cold running water for
Dry the disinfected
Tonometer prism with a
clean soft cloth.
1 min
approximately 1 minute, to
ensure Tonometer prism
6
is physically clean before
exposed to disinfection
Store the Tonometer prism in a
suitable container ready for use.
process.
Safely dispose of the
disinfectant fluids used.
3
Immerse the Tonometer prism
in the disinfectant fluid. Types
of disinfectant fluid vary.
Do not disinfect using
10 mins
the following:
Alcohol, Acetone, UV radiation,
Sterilisation, Immersion in fluid for
Please follow disinfectant solution guidelines for instructions, concentration and
time of immersion. (For example: Pantasept - 3% aqueous solution for 10 minutes,
Hydrogen Peroxide 3% aqueous solution for 10 minutes, Sodium Hypochlorite,
10% aqueous solution for 10 minutes etc.).
more than one hour,
Temperatures greater than 60°C
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5. Tonometer Prism field check
Check Tonometer prism under Slit lamp and ensure there is no
cracks/chips. Chemical used in diagnosis process (for example:
Fluorescein) will get into the cracks and will show up if observed
under slit lamp. Do not use it if there is any sign of crack or chip.
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6. Name of components of R type and T type KAT
1. Control weight housing
2. Rotating measurement knob
3. Doubling prism
3
4. Measurement arm
5. Manufacturers data
4
6. T type mounting assembly
7. R type mounting assembly
7
8. Calibration arm assembly
1
8
3
4
2
5
1
6
T type KAT (take-away)
Part number: 2414-P-2030
2
5
R type KAT (fixed)
Part number: 2414-P-2040
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7. Measurement procedure
7.1 Installation on to the Slit Lamp
Before installing the Tonometer on a Slit Lamp ensure that they
are mutually suitable.
7.1.1 Keeler Applanation Tonometer (T type)
• Position the guide plate in the Tonometer/test bar support hole
Guide Plate
on the slit lamp.
• Lift Tonometer out of the packaging and assemble it by
inserting the pin on its base into one of the two possible
openings (for right or left eye) on the horizontal guide plate
above the slit lamp axis. These positions are related to the
microscope optics and observation can be made either through
the right or the left eye-piece.
• The Tonometer will slip easily onto the support plate; stability is
assured by the locking pins.
• To obtain an image as clear and as free of reflexes as possible,
the angle between the illumination and the microscope should
be about 60° and the slit diaphragm should be fully opened.
• When not in use the Tonometer should be removed from the
Slit Lamp and placed securely back in the packaging or a
suitable location.
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7. Measurement procedure
7.1.2 Applanation Tonometer ‘Keeler Fixed’ (R type)
This instrument is for those who wish the Tonometer to remain
permanently on the slit lamp.
• Mount the plate for the Tonometer onto the microscope body
using the securing screw.
• Then mount the Tonometer mount onto the mounting post.
• Swing the Tonometer forward in front of the microscope for
Mounting
plate
examination. A notch position ensures exact centring of the
prism with the left objective.
• To obtain an image as clear and as free of reflexes as possible,
the angle between the illumination and the microscope should
be about 60° and the slit diaphragm should be fully opened.
• When not in use the instrument is swung around and secured in
a notch position to the right of the microscope.
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7. Measurement procedure
7.2 Preparing the patient
• Use an appropriate topical anaesthetic to numb the cornea.
• Place a strip of fluorescein-soaked paper near the outer
canthus in the lower conjunctival sac. After a few seconds the
lacrimal fluid will be colored and the paper may be removed.
When using drops, we recommend a 0.5% solution of
fluorescein sodium. If using a 1% or 2% solution, use a glass
rod to introduce a small quantity of liquid into the
conjunctival sac.
• Seat the patient at the Slit Lamp and place his chin on the
chinrest and ensure the forehead touches the forehead rest.
• Adjust the chinrest height so that the patients eye is at the
correct height (most Slit lamps have a marker on the chinrest
pole for correct height adjustment).
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7. Measurement procedure
7.3 Preparing the Slit Lamp instrument for
examinations at 10 x magnification
• Before beginning measurement, check that the eyepieces of
Slit Lamp are correctly focused.
• Set the brightness control of the instrument to position a low
intensity.
• Place the doubling prism on into the holder and align the
‘zero mark’ with the white alignment line on the prism
holder, this ensures the mires have a horizontal split.
• Insert the measurement arm so that the measurement head
and microscope optics axes are convergent.
• Rotate the measurement drum to position 1.
• Set the illumination angle of the Slit Lamp to be
approximately 60° to minimise unwanted reflections.
• Insert the blue filter on the slit lamp beam path and fully
open the slit diaphragm.
• Clean the doubling prism with Pantasept fluid at between
0.5% and 3.0% concentration or with a similar disinfectant
solution that is innocuous to organic glass (“plexiglass”).
After cleaning, rinse the doubling prisms in distilled
water and allow to dry. Full instructions on cleaning the prism
is covered earlier in this manual.
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7. Measurement procedure
7.4 Using the instrument/ taking a measurement
7.4.1 Instructions to the patient
• The patient’s head must be firmly positioned on the chin rest
and the forehead rest. If necessary, a band may be used to
hold the head still.
• Ask the patient to look straight ahead. If necessary, use a
fixation target to keep the eyes still.
• We recommend occasionally reminding the patient during the
examination, to keep his/her eyes wide open. If necessary, the
examiner may use the tips of his fingers to hold the lids open,
taking care not to exert pressure on the eye.
• When elevating the lids, the angle between the microscope
and the lighting unit must be reduced to about 10°, so
that the light beam passes through the body of the prism. In
this position it should be possible to obtain an image with no
reflections.
• Immediately before measurement, ask the patient to close
his/her eyes for a few seconds, in order to ensure that the
cornea be sufficiently wetted by the lacrimal fluid containing
the fluorescein solution.
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7. Measurement procedure
7.4.2 Taking the measurement
• Move the slit lamp forward to bring the measuring
• Increase applanation pressure by rotating the Tonometer
measurement drum until the margins of the fluorescein rings
prism into contact with the centre of the cornea in the area
touch and the cross as the eye pulses (Figure 2). The width of
above the pupil. The limbus will be illuminated with a bluish
the fluorescein rings around the contact position of the
light. The examiner will be able to better directly observe this
measuring prism should be equal to about 1/10 of the
phenomenon from the opposite side.
diameter of the applanation surface (0,3 mm).
• As soon as the corneal limbus is correctly illuminated,
immediately stop all forward movement of the slit lamp.
• To read the scale, multiply the readings by a factor of ten
(10). The result is the ocular pressure expressed in mmHg.
• After contact is established, observe the cornea through
the microscope. With the measurement drum set to position
1, the two semicircular fluorescein rings (which will vary in
Figure 2: Correct Final Position
size according to ocular pressure) will pulse rhythmically
when the Tonometer is in the correct position for
measurement.
• Use the Slit Lamp joystick control to make any corrections
needed until the applanated surface is observed as two
semicircular surfaces of equal area at the Centre of the field
of vision. (Figure 1). Small adjustments downward made with
the joystick will have no effect on the sizes of the semicircular
images.
Figure 1: Semicircular images at the
Centre of the field of vision.
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8. Problem solving
1. The fluorescein ring is too wide or too narrow
Cause:
Cause:
The fluorescein semi-circles are too wide.
The fluorescein semi-circles are too narrow.
The measuring prism was not dried after
The lacrimal fluid has dried during prolonged
cleaning, or the eyelids came into contact
measurement. The pressure reading is lower
with the measuring prism during
than real ocular pressure.
measurement. The pressure reading is higher
Correction:
than the real intraocular pressure.
Move the Slit Lamp back and ask the
Correction:
patient to close his/her eyes once or twice,
Move the slit lamp back and dry the
then repeat the measurement procedure.
measuring prism with a wad of sterile
cotton wool or lint free cloth.
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8. Problem solving
2. The measurement prism does not touch the cornea or too much force has been applied
Cause:
Cause:
If the patient pulls his/her head back even
If during measurement the slit lamp is moved
slightly, the pulses will become irregular and
forward toward the patient or the patient moves
measuring prism contact with the eye will
toward the slit lamp, the sensor arm will be pushed
become intermittent. If the patient pulls his/
into contact with a stop spring. The applanation
her head even further back, the fluorescein
surface will be too large. The image will not change
semi-circles will completely disappear.
when the measurement drum is rotated.
Correction:
Correction:
If possible, use a band to hold the patient’s
Retract the slit lamp until regular pulses and a
head in place.
correspondingly smaller applanation surface
are obtained. This is the correct measurement
position, in which variations in pressure
will not cause immediate variations in
the applanation surface.
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8. Problem solving
3. The two semicircles are not central in the field of vision
Cause:
The reading in this position is considerably
higher than real ocular pressure.
Correction:
Correction:
Using the slit lamp height adjustment
Using the joystick, move the slit lamp up and
mechanism, lower the slit lamp until the two
to the left.
fluorescein semi circles are equal in size.
Measurement pressure will then be reduced.
Cause:
The rings are too far to the right.
Correction:
Using the joystick, move the slit lamp to
the right.
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8. Problem solving
4. The inside margins of the fluorescein rings are not aligned and touching
Cause:
Cause:
The semi-circular images are well centred.
Excessive pressure has been applied.
The outer margins are aligned but the inner
Correction:
margins are not.
Reduce pressure until the semicircular images
Correction:
come closer together and finally the inner
Increase pressure by rotating the
margins align with each other, as shown in
measurement drum.
the last illustration.
Cause:
Correct final position
In this case, the inner margins of one
The inner margins of the fluorescein
semicircle are aligned with the outer margins
semicircular images are aligned and just
of the other.
touching each other.
Correction:
Increase pressure by rotating the
measurement drum.
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9. General information and suggestions concerning measurement
IMPORTANT NOTE
Measurement must be performed as quickly as possible on each
eye. Should epithelial drying be observed, we recommend the
patients acuity and visual fields should be examined.
The pressure measurement procedure may be repeated several
times. Nervous or anxious patients often have higher intra ocular
pressure during the first measurement procedure.
It has been found that pressure decreases during the first few
minutes of the procedure, when the patient realises that the
tonometric examination does is not unpleasant. When correctly
anaesthetised and with their eyes fully open, the patient will
When the measurement procedure for one eye is prolonged
excessively, drying phenomena will occur on the corneal epithelium
of both eyes.
A ring of fluorescent deposits will form around the cornea
contact surface and around the measuring prism on the eye
being examined. The other eye will show fluorescent dry areas,
resembling a map, which will hinder and make measurement
unreliable.
The eye will rapidly recover from any corneal dryness without the
need for any treatment, visual acuity may be temporarily affected
by fine epithelial defects.
feel absolutely nothing. Therefore we recommend running a
preliminary measurement procedure on each eye, the results of
which need not be taken into consideration. After completing the
preliminary procedure, run three measurement procedures on each
eye. These readings will be correct if the pressure has stabilised.
When the measurement procedures are performed correctly, the
results of the subsequent measurements will vary by only about
0,5 mmHg.
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10. Astigmatism
43° marker
If the cornea is spherical, measurements may be made along any
meridian, but it is usual to measure along the horizontal 0°
meridian. This is not the case when measurements are made on
eyes affected by corneal astigmatism of greater than 3 dioptres,
since the flattened areas will not be circular but elliptical.
0° marker
It has been calculated that in cases of more severe corneal
astigmatism a surface area of 7,354 mm2 (ø 3,06 mm) must be
applanated; in this case the measuring prism forms an angle of
43° to the meridian of maximum radius.
For example:
For corneal astigmatism of 6.5mm / 30º= 52.0 dioptres/ 30º and 8.5mm/ 120º
= 40.0 diopter / 120º, the 120° prism value will be aligned with the 43° "A" mark
on the prism support.
For corneal astigmatism of 8.5mm / 30º = 40.0 dioptres / 30º and 6.5mm / 120º
= 52 dioptres / 120º, the 30° prism value will be aligned with the 43° "A" mark.
In other words, align the axial position of the major radius (that is, the axis of a
negative cylinder) with the prism value at the "A" mark on the prism support.
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11. Routine instrument maintenance
Keeler recommends this routine maintenance be carried out by
user frequently to ensure safe and accurate measurement.
In the event of the device being outside of the calibration
tolerances, it is important to send the device back to Keeler Ltd.
0
Windsor for repair and re calibration.
11.1 Check procedure with the measurement drum
set to 0
Figure 3
Calibration Position – 0.05:
Rotate the measurement drum zero calibration downward by the
width of one calibration mark (see Figure 3). When the sensor arm
is in the free movement zone, it should move against the stop in
the examiner’s direction.
0
Calibration Position + 0.05:
Rotate the measurement drum zero calibration upward by the
width of one calibration mark (see figure 4). When the sensor arm
is in the free movement zone, it should move against the stop in
the patient’s direction.
Figure 4
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11. Routine Instrument Maintenance
11.2 Check procedure with measurement drum set to 2
t
n
Patie
This is the most important check procedure, since measurement of
intraocular pressure in this area is highly significant. We recommend
running this check daily.
This check is made using the calibration arm (Figure 5). The arm is
er
in
Exam
6
engraved with 5 circles. The Centre circle corresponds to drum position
0, the two immediately to the left and right to position 2, and the
0
outermost two to position 6. The arm is only marked on both sides of 0
2
to maintain symmetry in order to calibrate.
Slide the bar in the support until one of the position 2 marks on the
weight is located exactly at the reference mark of the weight support
(figure 5). With the weight of the bar towards the examiner the 2 check
Figure 5: Control Weight
can be made.
Continued on page 26
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11. Routine Instrument Maintenance
11.2 Check procedure with measurement drum set to 2
contd.
2
When the drum position is 1.95 and/or 2.05, the sensor arm should move
from the free movement area to the corresponding stop.
Calibration Position 1.95:
Rotate the measurement drum 2 calibration downward by the width
Figure 6
of one calibration mark (see Figure 6). When the sensor arm is in the
free movement zone, it should move against the stop in the examiner’s
direction.
Calibration Position 2.05:
Rotate the measurement drum 2 calibration upward by the width of
2
one calibration mark (see figure 7). When the sensor arm is in the free
movement zone, it should move against the stop in the patient’s direction.
Figure 7
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11. Routine Instrument Maintenance
11.3 Check procedure with the calibration arm set to 6
The Tonometer check procedure with a scale 6 calibration is very similar
6
to those described above. The checkpoints are 5.9 and/or 6.1. Rotate the
“6” calibration mark on the drum through ½ interval downward and/or
upward, respectively, with respect to the index mark.
6
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12. Servicing and calibration
Keeler recommends annual calibration of the instrument. This
must be performed by an authorised service centre or
distributor.
There are no user serviceable parts in this instrument. Service
manuals will be available to authorised Keeler service centres
and Keeler trained service personnel.
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13. Specifications
13.1 Transport, storage and working conditions
The following ambient condition limits are recommended for
the Keeler Applanation Tonometer, for transport and storage
it is recommended that the Tonometer is kept in it’s original
manufacturers packaging.
Before use the Tonometer should be allowed to adjust to the
ambient room temperature for several hours.
Ambient Conditions
Transportation
Storage
Storage
Temperature
-40°C to +70°C
Air Pressure
500 hPa to 1060 hPa
Relative humidity
10% to 95%
Temperature
-10°C to +55°C
Air Pressure
700 hPa to 1060 hPa
Relative humidity
10% to 95%
Temperature
+10°C to +35°C
Air Pressure
800 hPa to 1060 hPa
Relative humidity
30% to 75%
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13. Specifications
13.2 Technical specifications
Measurement force
By leverage weight
Installation:
Keeler T type: for Haag Streit type
Fitted to the guide plate on the optical axis for the
illumination systems
microscope and illumination unit arm
Keeler R type: for some Zeiss type and
Mountable on post on microscope
Haag Streit type illumination systems
Installation
Assembled on the guide plate on the slit lamp arm
Measurement range
0 - 80 mmHg (0 – 10.64 kPa)
Approximation of the impact force on
Standard divergence:
the measuring prism for a 0 to
0.49 mN <_ 3s <_ 1.5 % of nominal value
58,84 mN measurement range
Operating temperature range
From 10°C to 35°C
Measurement uncertainty
<_ 0.49 mN
Net weight
Keeler T type
0.48 kg (without accessories)
Keeler R type
0.82 kg (without accessories)
Part Numbers
Keeler T type
2414-P-2030
Keeler R type
2414-P-2040
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14. Accessories and warranty
14.1 Accessories
Tonometer doubling prism Part Number 2414-P-5001
Calibration arm assembly
Part Number 2414-P-5005
T type guide plate
Part Number 2414-P-5032
R type post
Part Number 2414-P-5042
Luxury carrying case
Part Number 3414-P-7000
Tonometer doubling prism
Calibration arm assembly
14.2 Product warranty
2 years against faulty workmanship, Materials and labour.
Warranty will be conditional on routine maintenance and
will not cover calibration or mechanical issues caused as a
result of lack of maintenance, poor use, incorrect transport or
inappropriate storage conditions.
Luxury carrying case
T type guide plate
R type post
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15. Contact information
Manufacturer
USA Sales Office
Keeler Limited
Clewer Hill Road
Windsor
Berkshire
SL4 4AA
Keeler USA
456 Parkway
Broomall
PA 19008
USA
Freephone: 0800 521251
Tel: +44 (0) 1753 857177
Fax: +44 (0) 1753 827145
Toll Free: 1 800 523 5620
Tel: 1 610 353 4350
Fax: 1 610 353 7814
0088
EP59-70020 Issue A
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