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Pupil "beats" on a friend
A friend of mine says his pupils are acting like heartbeats or like they breath, don't know how to explain. Any common issues that can cause this? He is about 16 years old.
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233488 tn?1310696703
These very rapid eye movements are called "Hippus" and are normal and most pronounced in the very young. They are normal

JCH MD
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Thanks for taking time and reply, good to hear it's nothing dangerous.
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233488 tn?1310696703
You're welcome
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