This booklet consists of an analysis dealing with endogenous conjunctivitis, supplemented by individual cases seen in the hospitals of Copenhagen. The various forms of conjunctival troubles accompanying exudative erythema multiforme (Hebra), erythema nodosum, pemphigus, herpetiform dermatitis, and urticaria are described and compared as to the incidence and characteristics. Considerable stress is laid on the similarity between the fibromembranous forms of conjunctivitis that occur in stomatitis and in patients with phlyctenular keratoconjunctivitis that have been treated with sanocrysin. Finally are discussed the endogenous eye disurbances associated with gonorrheal and rheumatic disorders. The generalized conclusions are drawn out to four pages and are repeated in Danish. A complete bibliography is one of the best parts of the entire endeavor.