Interstitial linear keratitis.

KERATITIS associated with a line of opacity within the cornea is a peculiar condition which has been included as an interstitial keratitis by Duke-Elder and Leigh (1965). It was first reported by Fuchs (1926) as keratitis linearis migrans, and the literature was enlarged and summarized by Wright (1963). The characteristic feature is a line of granular opacity which elongates at each end while migrating upwards and backwards through the corneal stroma. This migration has been of sufficient clinical interest for the word "migrans" to be incorporated in the name, but the following case shows that migration may not necessarily occur.