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Specular Microscopy/Photography
This test is used to
monitor the number, density, and quality of endothelial cells that line the
back of the cornea. A microscope
magnifies the cells thousands of times and the image is captured with a camera
or video camera. The number of
cells within one square millimeter are counted and recorded. The endothelium of a young,
ten-year-old, healthy cornea has approximately 3,500 cells in each square
millimeter. Normal aging causes
the cells to gradually decrease over time.
By age 60, most people have approximately 2,500 cells per square
millimeter.
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