WHY EYE RUBBING?
This conclusion relies on logical arguments, and offers an explanatory framework that alternative theories fail to provide. Ocular rubbing is the common denominator of allergy, ocular fatigue and dry eye. These conditions are currently considered as risk factors for keratoconus. Individual predisposing factors may co-exist with eye rubbing, such as a thin cornea or corneal stroma of reduced collagen quality. These factors make the cornea more vulnerable to the effects of ocular friction. The vast majority of patients with keratoconus recognized that they have rubbed their eyes long before the onset of the disease. Some patients deny rubbing at the first visit because they are unaware of this habit, but once sensitised to the deleterious effects of eye rubbing, they become more aware of their habits and routine, and eventually realize their actions.