ASK Dr Martin
Jul 09, 2020
2 minutes
Why have I got a cat’s eye?
Q My right pupil is oval and looks like a cat’s eye. My doctor calls it a coloboma. What’s that?
Marianne, Horsham
A A coloboma is something you’re born with, usually out of the blue, though occasionally it’s inherited.
Your iris, the coloured part of your eye, doesn’t form
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