Information
- Adnexal causes: Trichiasis, distichiasis, floppy eyelid syndrome, entropion or ectropion, lagophthalmos, blepharitis, meibomitis, acne rosacea, dacryocystitis, canaliculitis.
- Conjunctival causes: Ophthalmia neonatorum (in infants), conjunctivitis (infectious, chemical, allergic, atopic, vernal, medication toxicity), subconjunctival hemorrhage, inflamed pinguecula, superior limbic keratoconjunctivitis, giant papillary conjunctivitis, conjunctival foreign body, symblepharon and associated etiologies (e.g., mucous membrane pemphigoid, StevensJohnson syndrome, toxic epidermal necrolysis), conjunctival neoplasia.
- Corneal causes: Infectious or inflammatory keratitis, contact lensrelated problems (see 4.20, CONTACT LENSRELATED PROBLEMS), corneal foreign body, recurrent corneal erosion, pterygium, neurotrophic keratopathy, medicamentosa, chemical or ultraviolet burn.
- Other: Trauma, postoperative, dry eye syndrome, anterior uveitis, episcleritis, scleritis, endophthalmitis, pharmacologic (e.g., prostaglandin analogs), angle-closure glaucoma, carotidcavernous fistula (corkscrew conjunctival vessels), cluster headache.