Wright P
Trans Ophthalmol Soc U K (1962). 1980 Apr;100(Pt 1):96-7.
Three patterns of conjunctival change are associated with chronic inflammatory bowel disease: granulomatous; papillary hypertrophy with fibrovascular membrane formation; pyoblepharo-conjunctivitis with eosinophilic microabscesses. Immune factors play a part in their causation.