KERATOCONUS IN 2 PAIRS OF IDENTICAL-TWINS

We studied two sets of identical twins with keratoconus. The first 21- year-old pair had bilateral fully developed keratoconus and the second 35-year-old pair presented with early bilateral keratoconus detected by videokeratography. To our knowledge, these are the seventh and eigh th sets of identical twins with keratoconus reported in the literature . They support the evidence of heredity as a factor in the etiology of keratoconus. Videokeratography proved to be a valuable adjunct for th e detection of early keratoconus in a cornea with normal slit-lamp mic roscopy and photokeratoscopy results. Radial keratotomy in one eye pro duced an unstable refraction.