31 Structural Eye Disorders

Sclera and Cornea

• sclera: white part of eye, holds eye together

• becomes cornea in front of pupil and iris

• episclera: layer above it

• choroid: layer below it

Scleritis

• painful with eye movement because extraocular muscles insert here

• aka red eye

Episcleritis

• sits on top of sclera

Keratitis

• sclera separated from environment by conjunctiva (transparent)

• cornea has no conjunctiva covering, easy to be inflamed (keratitis)

• foreign body sensation in eye

Conjunctiva

• transparent layer sits on top of sclera

• also goes around eye and covers underside of eyelid

Conjunctivitis

• injection: blood vessels in eye

Adenovirus

• purulent: bacterial

Measles

Bacterial

Allergic

• bilateral = allergy

Uvea

• contains iris, ciliary body, choroid

Uveitis

• iridocyclitis: iris and ciliary body

• uvea: vascular layer, easy for antibodies from system

• ankylosing classic association

• bottom of picture