Horner's Syndrome: Some people have a weakness in the nerve input that helps keep the upper eyelid open. It is part of the sympathetic nervous system and the weakness is called Horner's syndrome. Often times it is also associated with a slightly smaller pupil in the same eye.
Answered 2/11/2017
1.2k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question