Astigmatism occurs when either the front surface of the eye (cornea) or the lens inside the eye has mismatched curves. Instead of having one curve like a round ball, the surface is egg-shaped.

What is the main cause of astigmatism?

It's not known what causes astigmatism, but genetics is a big factor. It's often present at birth, but it may develop later in life. It may also occur as a result of an injury to the eye or after eye surgery. Astigmatism often occurs with nearsightedness or farsightedness.

Can astigmatism be cured?

There are three options to correct astigmatism – glasses, contact lenses or laser eye surgery. Prescription glasses or contact lenses can correct astigmatism (along with long-sightedness or short-sightedness, if necessary). Alternatively, laser eye surgery can correct astigmatism and give you clearer vision.