Corneal dystrophies and keratoconus.

Knowledge about keratoconus (KC) and the corneal dystrophies continues to advance at a steady pace in view of the wide interest in these topics to basic scientists and clinical ophthalmologists. As in the past the articles on KC outnumber those on all of the other corneal dystrophies combined. Major advances have been made mainly regarding several specific corneal dystrophies, but KC remains a perplexing disorder with many unanswered questions. As we learn more and more about the corneal dystrophies from genetic linkage analyses and molecular biological techniques it will eventually be possible to understand the fundamental defect that causes these conditions.