Polymegethism is a greater than normal variation in size of the
corneal
The cornea is the transparent front part of the eyeball which covers the iris, pupil, and anterior chamber. Along with the anterior chamber and lens, the cornea refracts light, accounting for approximately two-thirds of the eye's total optical ...
endothelial cells.
Causes include aging, contact lens wear,
ocular surgery, trauma and damage.
References
Human eye anatomy
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