Apparatus and method for testing visual sensitivity to glare

Details Apparatus and method for testing visual sensitivity to glare Apparatus and method for testing visual sensitivity to glare

1986-09-22

1989-01-24

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351246, A61B 302, A61B 300

Patent

active

048004049

ABSTRACT:
Glare testing apparatus enclosed in a housing includes multiple discrete light sources for creating a glare condition in the field of view from an individual being tested to a target, and provision is made for selecting the location or locations of active glare sources, which includes a centrally located source of headlight glare, and a plurality of peripheral sources which can be energized selectively or collectively. Provision is also made for adjusting target luminance, glare intensity and the apparent distance between the target and the eye position in order to test near and far visual acuity under varied conditions of luminance and glare.

REFERENCES:
patent: 2209728 (1940-07-01), Higley
patent: 2795993 (1957-06-01), Leverett et al.
patent: 3684355 (1972-08-01), Molner
patent: 3936162 (1976-02-01), Krakau et al.

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