[Changes in precorneal tear film and ocular surface in keratoconic patients after corneal collagen cross-linking].

The article reviews the current available data on the signs and symptoms of dry eye syndrome (DES) in patients with keratoconus (KC), describes the clinical features of DES in KC patients and the morphological features of this type of keratectasia that lead to manifestations of the «dry eye», and highlights the risk factors, consequences of therapeutic measures, concomitant ophthalmological and general somatic diseases that contribute to the development of DES in KC.