RETINAL IMAGING SYSTEMS WITH IMPROVED RESOLUTION
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United States of America Patent
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Issued Date -
Jan 17, 2013
app pub date -
Dec 23, 2010
filing date -
Dec 23, 2009
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Abandoned
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Abstract
A scanning ophthalmoscope focuses coherent light to a target area in which a subject's eye is located. One or more scanning stages direct the light in a scanning pattern within the target area, and an imaging detector receives a reflected light signal returned following retinal reflection in the subject's eye. Adaptive optics compensate for aberrations in the wavefront. The light is provided as an annular beam at a plane which is conjugate with the pupil of a subject whose eye is located in the target area, whereby the annular beam is focused from an annulus at the pupil of the eye to a spot at the fundus of the eye. The spot size resulting from using an annular beam in this way is significantly reduced providing enhanced resolution.
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