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What Is Coloboma?
Medically reviewed by Johnstone M. Kim, MD A coloboma is a missing piece of tissue in a person's eye. It is a congenital ...
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Slit vs Round Pupils: Why Do Some Cats Have Differently Shaped Pupils?
The shape of a cat's pupil has to do with their lifestyle habits, with nocturnal cats having more slit shaped pupils to help ...