The most common diseases of the eye are:

black eyes

are bruises of the eyelids

stye

is an inflammated swelling of the edge of the eyelid

conjunctivitis

is an inflammation of the conjunctiva

blepharitis

is a inflammation of the eyelid margin

herpes Zoster

affects the skin of the eyelids

glaucoma

is due to an increase in ocular tension or atrophy of the pupil

keratoconous

is a developmental anomaly where the central portion of the cornea