Keratoconus. Epidemiologija

    The national Eye Institute informs, that keratoconus - the most blanket corneal dystrophia in the United States, damaging approximately 1 in each 2 000 Americans, but some reports place the Drawing so highly as 1 in everyone 500. Inconsistency can occur because of variations in diagnostic measure, to some cases of a high astigmatism intepreted as those keratoconus, and on the contrary. The remote examination has found on the average a case rate of 2.0 new cases in 100 000 population annually. Men and women, and all ethnic accessories seem equally acquisitive though some recent examinations have called in question it, offering higher prevalence among women; the literature however changing rather its expansions. Keratoconus is usually two-sided, damaging both eyes though contortion usually azygomorphously and seldom completely is identical in both corneas. Unilateral cases tend to be rare, and can actually be very rare if very soft Condition in the best eye is simple below a limit of clinical detection. For keratoconus is characteristic to be diagnosed at first in one eye and only in later in other. As the Condition then progresses in both eyes, vision in earlier eye will be often maintained to be more bad than it in its companion.