What are the 3 ailments of eyes?

Three common eye ailments are:

1. Myopia (Nearsightedness): This is a condition where distant objects appear blurry while close objects are seen clearly. It occurs when the eyeball is too long or the cornea is too curved, causing light to focus in front of the retina instead of on it.

2. Hyperopia (Farsightedness): This is the opposite of myopia, where close objects appear blurry while distant objects are seen clearly. It occurs when the eyeball is too short or the cornea is too flat, causing light to focus behind the retina.

3. Astigmatism: This is a condition in which the cornea or lens is not perfectly round, causing blurred vision at all distances. It occurs due to irregularities in the curvature of the cornea or lens, resulting in light focusing at multiple points instead of a single focal point on the retina.