User`s guide

16
68E34 41 Rev.G
Instructions for Use
Performing IOP Measurements
CAUTION: OCU-FILM CONTAINS NATURAL RUBBER LATEX WHICH
MAY CAUSE ALLERGIC REACTIONS. QUESTION PATIENTS ABOUT
ALLERGIES TO LATEX BEFORE EXAMINING THEM WITH THE
TONO-PEN XL.
1. Instill a drop of topical anesthetic onto the eye to be examined.
2. Position the patient, seated or supine, in front of a fixation target; or
have the patient fixate on a point of reference (i.e. ear, nose, distant
object) to minimize eye movement.
Note: The Tono-Pen XL unit will function in any stable position.
3. Instruct the patient to look straight ahead at the fixation target (i.e. ear,
nose, distant object) to minimize eye movement, with eyes fully open.
4. Hold the Tono-Pen XL 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.
5. 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
6. Brace the heel of your hand on the patient’s cheek for stability while
holding the Tono-Pen XL unit perpendicular to and within 1/2 inch of
the patient’s cornea. Refer to Figure 6 for correct positioning.
7. To initiate an IOP measurement, depress the Operator’s Button once,
and only once.
8. 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.