A member asked:

My right eyelid drops slightly on top of pupil not much, is that ptosis? only see big difference if you look closely or in close up pictures. im 19

A doctor has provided 1 answer

Please see figure: See the figure below. The margin reflex distance is the distance from the center of the pupil to the lower limit of the upper eyelid. Normal MRD is 4-5 mm. A measurement of less begins to be ptosis.

Answered 4/9/2019

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Does a drooping eyelid always equal "ptosis"?

4 doctors weighed in across 2 answers