Keratoconus (KC) refers to a non-inflammatory disease affecting the cornea that is characterized by severe conical ectasia in addition to protrusion of the thinned stromal part. Increased degree of myopia and irregular astigmatism resulting in slightly or severely impaired vision. Advanced KC can be easily demonstrated via the distinct clinical criteria including scissoring reflex by retinoscopy, thin corneal Fleischer's ring, Vogt's striae, Munson's sign, Rizzutti's sign, as well as easily visible corneal nerves & the keratometry readings. Recently, computerized corneal topography has been considered one of the most sensitive diagnostic methods that can determine early KC prior to the appearance of classic manifestations. Also, OCT is used now to assess the anterior ocular structures like the cornea, limbus, and tear film. The association between tear function changes in keratoconus is still controversial, the possibility of abnormal tear circulation due to altered surface topography of the cornea in keratoconus patients.
AIM OF THE WORK
The aim of the study was to compare dry eye symptoms and signs in KC patients and get comparison about dry eye disease in KC group and healthy group.