Astigmatism is a condition where the cornea (transparent layer covering the coloured part of the eye) is oval instead of perfectly round. This irregular curve means that light rays entering your eye focus in two different places on the light-sensitive...
Keratoconus is a progressive eye disease in which the normally round cornea begins to weaken and becomes more cone-shaped. This cone shape deflects light as it enters the eye, causing increasing nearsightedness and problems with distorted and blurred vision. Keratoconus can...