Eye-“itis:” differences between keratitis, episcleritis, scleritis, and uveitis

The eye-“itis”es can be pretty confusing for those of us who don’t regularly use an ophthalmoscope to visualize changes in blood vessels, free-floating cells, deposits, and detritus. (The last time an internal medicine resident diagnosed uveitis on slit lamp/fundoscopy was…? Sorry to my ophtho friends.) Here are some slides I made to help distinguish the “itis”es (organized from anterior to posterior):

***N.B.: One important cause of “red eye” not discussed here is ACUTE ANGLE CLOSURE GLAUCOMA. Conjunctivitis is also not discussed.

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