Ocutech VES II
(Vision Enhancing System)
Fitting Guide
Positioning the VES® for the Proper Eye
The VES® is a monocular telescopic system.
The choice of which eye to choose for the
prescription of the VES® in binocular patients
is a function of which has the better visual
acuity as well as the patient’s preferred
sighting eye. The VES® gives you the option
to evaluate either eye, as it is completely
interchangeable for the right or the left.
If the VES® is not positioned
on the frame for the proper eye,
remove the “side screws” with
the allen wrench and flip the
telescope over to position it for
the proper side. Then re-insert
the “side screws”.
Focusing is Quick and Convenient
Adjusting the focus of the VES® is easy.
The front focusing knob doubles as a
focusing correction for the patient’s
prescription as well as to focus the
telescope for different distances.
Demonstrate the convenient
focusing of the VES ®
cautioning the patient not to
block the front window opening
of the telescope.
Changing the Positioning of the Telescope
From Standard to Low Mounting Position
The VES® can be prescribed in the standard
“above the frame” position or in the optional
“low mounting” position. The choice of the
appropriate positioning is a function of the
intended use of the device as well as the
anatomical features of the patient. Patients
with wide or high bridges may prefer the low
mounting position, as do users who intend to
use it for intermediate and near rather than
distance tasks.
Bottom mounting is accomplished by
attaching the telescope beneath the
mounting plate rather than above it using
the optional bottom mounting bracket as
described in the four steps that follow:
(The standard mounting bracket will work
in many circumstances, however the
optional bottom bracket will provide a wider
range of adjustment.)
1. Remove the VES® from the
bracket by unscrewing the allen
screws from each end.
2. Remove the bracket from the
mounting plate by removing the
two bottom screws.
3. Reattach the bottom mounting
bracket beneath the mounting
plate with the feet facing toward
the back of the frame.
4. Attach the telescope back onto
the bracket with the back of the
telescope flush to the front of
the bridge of the frame and the
bottom screws coming down
through the top of the plate.
Use of a screw-holding screwdriver
is recommended.
(Available from Ocutech and
included in the diagnostic kit.)
Frame should position
slightly higher on the bridge.
The eyepiece should position
slightly above the pupil
shown here.
Ocutech VES II Fitting Guide
Fitting the VES® Is As Easy As One, Two, Three.
Step 1
Place the system on the patient and adjust
the temples in the normal fashion. Position the frame
on the nose by spreading the nose pads until the
frame is as low as possible without unacceptable
cut-off of the superior field.
Align top of eyewire of
frame with top of pupil
or bottom of upper lid –
whichever is lowest.
Spread the nose pads to allow the frame to fit as low
as possible while keeping a short vertex distance.
Step 2
Demonstrate to the patient how the
telescope moves right and left on the frame.
Explain that once you put it on they will help you
move it right and left, fine tuning it like a radio,
until it is lined up with their line of sight. When it
is aligned, they will see a full circle (not cut-off)
and the image will be brightest.
A slightly decentered position may still produce a
Carefully tighten the “bottom
Have the patient move the
full field but image brightness will be reduced.
screws” to lock the
telescope right and left until the
telescope in place for
eyepiece is properly centered for
When placing the VES ® on your patient preadjust
the patient’s line of sight.
the widest field of view and
the focus, place the telescope close to the proper
PD, and tilt the telescope up higher than you
would expect. The extra tilting seems to help the
patient “get into the telescope” a little easier. Once the PD is set, carefully tighten the bottom screw. By loosening
the side screws the telescope can be moved in and out for additional vertex distance control.
Step 3 Have the patient drop their chin and look up through the telescope. With the side screws loosened, have
them change the tilt of the telescope until the image is again fullest and brightest. Have them switch between the carrier
and the telescope several times to confirm the best positioning. Tighten the side screws and the fitting is complete.
This angle should be as small as possible.
Ask the patient to adjust the
angle of the telescope for the
widest field of view and
brightest image.
Tighten the “side screws” with
the allen wrench. Have the patient
hold one end to keep the
telescope in position.
109 Conner Drive, Suite 2105, Chapel Hill, NC 27514 USA
+1 (800) 326-6460 • +1 (919) 967-6460 • Fax: +1 (919) 967-8146
Info@ocutech.com • www.ocutech.com
Effective August 2010
In primary position, the frame should be low
on the bridge but NOT DOWN THE NOSE.
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