Optotype presenting apparatus

Details Optotype presenting apparatus Optotype presenting apparatus

2007-06-26

2010-10-26

Collins, Darryl J (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

For fusion and space perception testing

C351S200000, C351S222000, C351S239000, C351S237000, C351S244000

Reexamination Certificate

active

07819524

ABSTRACT:
An optotype presenting apparatus for presenting an optotype to be used for testing a visual function of an eye of an examinee, the apparatus comprises: a display unit including a memory in which a plurality of optotypes is stored and a display on which at least one of the stored optotypes is displayed; an operation unit by which at lest one of the stored optotypes to be displayed on the display is selected; a pilot lamp placed to be visible by the examinee who is in front of the display; and a control unit which turns on the pilot lamp when the display unit is powered on and the display is in an off-state, and turns off the pilot lamp when the display unit is powered on and the display is in an on-state.

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