Optics: eye examining – vision testing and correcting – Eye examining or testing instrument
Patent
1999-01-19
2000-10-24
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
A61B 310
Patent
active
061355968
ABSTRACT:
An ophthalmic apparatus including a measuring part for examining or measuring an eye to be examined by bringing the measuring part into predetermined alignment condition relative to the eye, the apparatus comprising a target projecting device for projecting a plurality of alignment targets on a cornea of the eye with predetermined arrangement therebetween, a luminance point detecting device for detecting luminance points of which intensity is equal to, or brighter than a predetermined intensity level from luminance points formed on the cornea of the eye upon projecting the alignment targets thereon by the target projecting device, an irregular luminance point detecting device for detecting irregular luminance points based on information about the luminance points detected by the luminance point detecting device and a movement instructing device for instructing movements of the measuring part relative to the eye based on the information about the luminance points from which the irregular luminance points detected by the irregular luminance point detecting device are excluded.
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Manuel George
Nidek Co. Ltd.
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