Clinical and virological investigations: A. Slit lamp biomicroscopy under optical section of the right eye showing a solitary paracentral, well circumscribed, large, full thickness stromal infiltrate, collapsed anterior chamber and a central area of perforation. X 16. B. Giemsa stained corneal scraping showing a multinucleated giant cell with characteristic molding of the nuclei. X 1250. C. Conjunctival scraping from lower palpebral conjunctiva showing epithelial cells positive for HSV-1 antigen (Indirect immunoperoxidase, X 500). D. Corneal scraping showing many cells positive for HSV-1 antigen (Indirect immunoperoxidase, X 500).