Coloboma and aphakia. Close-up of the eye of a 63-year-old female patient with a coloboma, previous retinal detachment, and aphakia (no lens). A coloboma is a hole in one of the structures of the eye, such as the iris (as in this case), retina, choroid, or optic disc. It is present from birth. Aphakia is the absence of the lens of the eye, due to surgical removal, injury, or congenital anomaly. It can lead to complications including detachment of the retina and glaucoma.
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