Anomaloscope

Details Anomaloscope Anomaloscope

2008-06-05

2009-12-08

Stultz, Jessica T (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

C351S243000, C351S237000, C351S221000

Reexamination Certificate

active

07628491

ABSTRACT:
An anomaloscope for measuring and monitoring color vision, whereby gross and subtle color vision changes due to a disease process may be readily monitored over time. The device has a series of bicolor or red/green light sources presented in pairs with amber/yellow light sources, for comparison with the red/green light sources. By varying the mix of red and green light, a progression is established. A test subject indicates a perceived match between a pair consisting of a red/green light and a yellow light, to indicate the tester's sensitivity to color.

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patent: 5297559 (1994-03-01), Severns
patent: 6220708 (2001-04-01), Koest
patent: 32 09 455 (1983-09-01), None

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