User`s guide

Page 16
68E3527 Rev. F
Instructions for Use
Performing IOP Measurements
CAUTION: OCU-FILM CONTAINS NATURAL RUBBER LATEX WHICH
MAY CAUSE ALLERGIC REACTIONS. QUESTION PATIENTS ABOUT AL-
LERGIES TO LATEX BEFORE EXAMINING THEM WITH THE TONO-PEN
VET.
1. Instill a drop of topical anesthetic onto the eye to be examined.
2. Position and secure the patient to minimize eye movement.
Note: The Tono-Pen VET unit will function in any stable position.
3. Hold the Tono-Pen VET unit as you would a pencil and position your-
self to facilitate viewing of the probe tip and patient’s cornea where
contact will be made. For normal corneas, central corneal contact is
recommended.
4. The corneal surface needs only to be momentarily contacted. Indenta-
tion or additional pressure is not required and may lead to injury to the
eye. Refer to Figure 6.
CORRECT INCORRECT
Figure 6 Corneal Applanation
5. Hold the Tono-Pen VET so that it is perpendicular to and within 1/2
inch of the patient’s cornea. Refer to Figure 6 for correct positioning.
6. To initiate an IOP measurement, depress the Operator’s Button once,
and only once.
7. Initially you will see a brief display of [8.8.8.8]. This is a self-test of the
LCD (Liquid Crystal Display).
Note: If any of the LCD segments are not displayed, the Tono-Pen
requires service.
Note: If a momentary display of [CAL] is seen, followed immediately
by a single row of dashes [- - - -], it indicates that the Tono-Pen
requires calibration before it will measure.