Optec 5000PG, Reference And Instruction Manual

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Vision Testing – The Right Way
Look into the instrument and note what happens when the eye switches are ON and OFF. Experiment with viewing FAR
point slides at NEAR point and vice versa, by dialing through all 12 slides. First, view all slides in the FAR point mode,
and then repeat in the NEAR mode. Note that FAR test slides viewed at NEAR are upside-down, as are the NEAR test
slides viewed at FAR. It is important to recognize whatever the subject may be describing and be able to answer any
questions. Concentrate on acquiring a smooth delivery of instruction and description of the test target, as well as
confidence in handling the instrument. The tester's administrative expertise can help relax the subject, achieve
cooperation, and a more accurate response.
When speaking to the subject, never act surprised or provoked by their response or lack of response. Give the subject
every opportunity to demonstrate his/her best vision.
If the subject normally wears glasses or contact lenses, he/she should wear them during the testing to determine
whether or not his/her prescription is still adequate.
Select a table or counter of convenient height with sufficient surface space for the instrument and the recording of these
results. Normal room lighting is acceptable, but care should be taken to avoid light shining on the lenses or on the
subject's face.
IMPORTANT CHECKPOINTS:
-
Be certain the instrument is plugged into a 110-240VAC outlet.
-Adjust instrument to proper height for subject's comfort by depressing button on base and moving the housing.
-Before the instrument is turned on, the dial must be rotated so that the number '1' is located under the FAR indicator.
This must be done each time the unit is turned on.
-Push power switch on back of instrument to activate the instrument.
-Tear off headrest tissue, so a clean tissue is ready for the subject.
-Be certain the subject presses their forehead against the headrest activator so the illumination in the unit is activated
and the GREEN "READY" indicator on the control panel is lit.
-Be certain the subject is comfortable.
-Be certain to have a clean record form and a scoring marker.
YOU ARE NOW READY TO TEST