Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Reexamination Certificate
2005-05-31
2005-05-31
Casler, Brian L. (Department: 3737)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
C351S246000
Reexamination Certificate
active
06899428
ABSTRACT:
The present invention relates to a device and methods for contrast sensitivity measurement. The device and the methods make it possible to precisely measure the contrast sensitivity of a subject within a short period of time. The device comprises a contrast target display part100for displaying contrast targets for a contrast sensitivity test, a contrast target data determination part320for determining contrast targets to be displayed on the contrast target display part100according to data on optical characteristics of an eye of a subject to be examined, a contrast target display control part330for instructing the contrast target display part100to display contrast targets based on contrast target data created in the contrast target data determination part320according to a predetermined procedure, and a display part600for displaying the results of contrast measurement of the subject using data on a history of responses of the subject to displayed contrast targets.
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Casler Brian L.
Foley & Lardner LLP
Sanders John R.
Topcon Corporation
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