User`s guide

Page 4
Overview
The Reichert TONO-PEN XL is a precision electronic tonometer which measures
intraocular pressure (IOP). The body of the instrument is specially designed to t
comfortably in the user’s hand, facilitating fast and accurate measurements. The
stainless steel probe on the TONO-PEN XL contains a solid state strain gauge
which converts intraocular pressure (IOP) to an electrical signal. The probe tip
must be covered by a protective membrane. Reichert OCU-FILM® Tip Covers
are recommended. Utilizing a sophisticated “single chip” microprocessor and
electronics housed in the body of the instrument, the waveform produced by each
touch to the anesthetized corneal surface is analyzed and stored for a statistical
comparison process. Each single valid IOP reading is digitally displayed on the liquid
crystal display (LCD). When four valid readings are obtained, the mean IOP and the
standard deviation for those readings (an indication of reliability) are shown on the
LCD.
Intended Use
The TONO-PEN XL is intended for measuring IOP as a screening/monitoring tool for
Glaucoma or when increased IOP is suspected.
Components
The TONO-PEN XL unit (see Figure 1) is provided in a storage case, complete with:
Ocu-Cel™ XL Batteries
OCU-FILM® Tip Covers
Stylus Blade for battery replacement
Desiccant to keep the instrument and components dry
(not shown in Figure 1)
Instruction Manual
Instructional DVD (not shown in Figure 1)
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Introduction