Myopia, also known as nearsightedness, is a condition in which a person can see near objects more clearly than distant objects. Myopia usually occurs when an eyeball is larger than normal. Due to the larger eyeball, light rays from distant objects focus in front of the retina. The result is blurred vision. Mainly myopia is inherited. Frequent or prolonged near work may influence its progression. It is typically detected in school-age children, which may worsen during adolescence, and generally stabilizes between the age of 20 to 40 years.
Light entering the eye is focused in front of the Retina. It is caused by a steeper than normal Cornea, or an eye that is longer than normal.