Filamentary keratitis, a little-known complication of cataract surgery, caused significant symptoms in the patients it affected. In most instances, the filaments disappeared in a week or two with therapy consisting of filament removal with (0.5%) silver nitrate impregnated cotton-tipped applicators. However, in two out of eight patients, the filaments recurred up to four years after surgery, although the visual acuity usually was not significantly affected.
Dodds HT, Laibson PR. Filamentary Keratitis Following Cataract Extraction. Arch Ophthalmol. 1972;88(6):609-612. doi:10.1001/archopht.1972.01000030611007