In a previous paper1 I described structural changes in a lens during the active stage of a corneal ulcer as they are seen microscopically, and in a second paper,2 the changes that may result long after an ulcer has been replaced by scar tissue. The present paper, the third in the series, has for its object a microscopic study of lesions occurring in a lens in nontraumatic iritis.
Ordinarily, a lens remains clear after a first attack of iritis ; it is only after repeated attacks that opacities in the lens appear. I recall but 1 case, that of an able-bodied man of 54, in which cataract developed during a first attack of iritis. The iritis lasted about two months and was marked by an enormous infiltration in the stroma and a lenticular mass of exudate in the anterior chamber. The pain was of a rheumatic, intractable character. For