Red Eye – very common and can be usually be treated by Family physicians except if life threatening (corneal ulceration, iritis, and glaucoma).
Infections or Occlusion:
Internal Hordeolum – infection of meiboian glands.
Sty (External Hordeolum): infection of the gland of Zeis (the glands of eye-lashes).
Chalazion — sterile inflammation of the meiobian glands.
Blepharitis — infection, inflammation, and scaling of the eyelid margins.
Dacryocystitis — occlusion of the nasolacrimal duct.
Orbital or Periorbital cellulitis — can spread from sinusitis.
Iritis or Glaucoma — from hyperemia of ciliary vessels.
Subconjunctival Hemorrhage — bleeding the small fragile vessels of the conjunctiva in response to minor trauma or straining.