A drooping of the upper eyelid due to damage to the muscle that raises the eyelid is known as ____.

A) sty
B) ptosis
C) blepharitis
D) glaucoma
E) iritis

Ptosis

A drooping or falling of the upper eyelid which may be due to a variety of causes including disease, injury, or natural aging.

Blepharitis

An inflammation of the eyelids, often causing redness, itching, and dandruff-like scales on eyelashes.

Glaucoma

Glaucoma is a group of eye conditions that lead to optic nerve damage, often associated with elevated intraocular pressure, and can result in loss of vision if not treated.