Instruction manual

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4.3.1 Patient Preparation
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.
To prepare a patient for an IOP measurement:
Instill a drop of topical anesthetic onto the eye to be
examined.
Position the patient, seated or supine, in front of a
fi xation target; or have the patient fi xate on a point of
reference (i.e. ear, nose, distant object) to minimize eye
movement.
*Note:  e Tono-Pen XL unit will function in any stable posi-
tion.
4.3.2 Patient Examination
To perform an IOP measurement:
Instruct the patient to look straight ahead at the fi xation
target with his/her eyes fully open.
Hold the Tono-Pen XL unit as you would a pencil.
Position yourself to facilitate viewing of the probe tip and
patient’s cornea where contact will be made. For normal
corneas, central corneal contact is recommended.
Brace the heel of your hand on the patient’s cheek for sta-
bility while holding the Tono-Pen XL unit perpendicular
to and within 1/2 inch of the patient’s cornea. (See Figure
4-1 for correct positioning.)
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