Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Reexamination Certificate
2007-10-16
2007-10-16
Sugarman, Scott J. (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
C351S205000, C600S476000
Reexamination Certificate
active
10941249
ABSTRACT:
A system and method are provided for measuring the thickness of a tear film layer and the heights of tear menisci around upper and lower eyelids of an eye. A plurality of images are acquired between consecutive blinks the eye using optical coherence tomography (OCT). The images depict the tear film layer and tear menisci as distinct from the cornea of the eye. In an embodiment, a plurality of reflectivity profiles from an OCT image are aligned and averaged. The difference between a first peak and a second peak of the average reflectivity profile is measured to determine the thickness of the tear film layer. The heights of the upper meniscus and the lower meniscus can also be measured from the same OCT image. In an embodiment, thickness measurements from the plurality of OCT images are combined. The measurements can be used to diagnose tear disorders, analyze treatments of dry eye and evaluate artificial tears.
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McDermott Will & Emery LLP
Pinkney DaWayne A
Sugarman Scott J.
University of Rochester
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