Munson sign

Mun·son sign

(mun'son),
in keratoconus, the extra bowing of the lower eyelid caused by the misshapen cornea as the eye rotates downward.

Mun·son sign

(mŭn'sŏn sīn)
In keratoconus, the extra bowing of the lower eyelid caused by the misshapen cornea as the eye rotates downward.

Munson,

Edward Sterling, U.S. ophthalmologist, 1933–.
Munson sign - abnormal bulging of the lower eyelid.