Which vision problem do you have?

Posted in Eye Problems on February 9, 2009

Most people have normal eyesight and can see different clearly. There is no job in the world that does not require a level of visual acuity. It is important to have good eyesight to see all objects, far, and near, distinctly and clearly.

You are able to see objects when the rays of light passing through the eyes lens and cornea are bent, and meet at a focal point on the retina at the back of the eye. But sometimes, due to the improper shape of the cornea and lens, the light is bent differently and is focussed either in front of the retina or behind it. To correct this vision problem, most people use eyeglasses and contact lenses.

The common vision problems seen in people are:

Myopia or nearsightedness This vision error occurs when the light rays fall in front of the retina of the eye. People who have myopia can see close images clearly but face difficulties when seeing objects at a distance.

Hyperopia or farsightedness This vision error occurs when the rays of light fall behind the retina of the eye. Hyperopia causes near vision to be fuzzy and unclear.

Astigmatism It is a deformation in the shape of the eyes cornea. In this vision error, the light rays entering at the bottom and top of the eye are not focused at a single point but form different lines.

Presbyopia This vision error occurs to almost everyone by the age of 50 and is a part of the ageing process. In this error, the eyes lens becomes less flexible and it gets harder to focus on close images.