DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Drooping eyelid (ptosis) in an 89 year old male patient following a botox injection to correct double vision (diplopia). Ptosis is normally due to weakness of the levator muscle of the upper eyelid, or in this case the effect of botox on the nerve to the muscle.
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