This article describes a clinical case of a filmy form of adenoviral epidemic keratoconjunctivitis (EKC) in an adult patient. The given case is interesting in that the onset of EKC did not foreshadow a complicated, hyperergic course of the filmy form in an adult patient. That ultimately led to cicatricial changes in the conjunctiva in the form of a partial external symblepharon. Alertness of ophthalmologists in relation to this form of EKC, which requires differential diagnosis, first of all, with true toxic diphtheria lesion of the conjunctiva, is necessary. Adequate complex antiviral treatment of EKC with the use of corticosteroids, immunomodulatory and symptomatic therapy helps to stop the process. Key words: adenovirus conjunctivitis, epidemic keratoconjunctivitis, membranous form, complicated course, partial simblefaron, dry eye syndrome.
