External Features
1. Forehead Activator: Controls illumination inside the Vision Tester. It will only activate the lights
when the subject maintains pressure against the activator, insuring the subject to be at a proper
distance for testing. When forehead pressure is applied to the bar, the green "Ready" indicator will
be illuminated on the control panel and the subject will be ready to be tested.
2. Headrest Tissue: The tissue cushions the subject's forehead while allowing maximum hygienic
conditions.
3. Lens System: The upper lenses are for FAR Point testing (simulated distance of 20 ft.) The
subject looks straight ahead. The lower lenses are for NEAR Point testing (simulated distance of
16 in.) with the subject looking down while holding his/her head straight. The lenses are easily
accessible for cleaning and the face plate is wide enough to accommodate wide contemporary
eyeglass frames.
4. Instrument Base: It gives a stable foundation for the vision tester in all positions.
5. Elevation Adjustment: Simply depress the button in the base and adjust the instrument to the
desired height for each subject. Release button and the instrument is locked in place.
6. Observation Doors: The observation doors, located on both sides of the unit, allow the tester easy
access to both FAR and NEAR test slides. A pointer can be used by the tester to assist the subject
in identifying the targets. The pointer is held in place by clips inside the door. The doors are held
closed with magnets.
7. FAR and NEAR Indicators: These lights indicate how the instrument is set to test accordingly.
8. Test Dial and Knob: Located on both sides of the unit, is used to change slides in the viewing
area. The ribbed knob turns the dial easily and can go forward or reverse. The numbers on the dial
correspond to the numbers on the record form for identifying the test slide. The number under the lit
indicator is the number of the test in the viewing area. On the Model 5500 (motor-driven) Vision
Tester, this small knob should not be used. All slides should be advanced from buttons on the
remote control panel.
9. Electronic Control Panel: Operates the functions of the vision tester, power switch, right and left
eye switches, Near and Far switches, and the optional peripheral test controls.
10. Instrument Body: The Instrument Body is lightweight and is made of flame retardant ABS plastic.
11.Carrying Handle: Built-in for maximum convenience. The rigid handle and lightweight body aid in
ease of portability.
The serial number is located on the inside of the Slide Access Door
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