What are the symptoms of myopia and how it is caused?

Question

Hi,

Myopia, also known as near-sightedness and short-sightedness, is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus. It does not affect focus when looking at a close object.
Myopia presents with blurry distance vision, but generally gives good near vision. In high myopia, even near vision is affected as objects must be extremely close to the eyes to see clearly, and people with myopia cannot read without their glasses prescribed for distance.

Causes:
Nearsightedness happens when your eye is longer than normal, or, less often, when your cornea is too curved. It?s a problem in the focusing mechanism of the eyes. However, the exact cause of myopia is not known.

Two key risk factors:

Family history. If one or both parents are nearsighted, the chance of their children developing it increases.
    Working up close. Myopia may be helped along by how a person uses their eyes. Intense detail work, long hours in front of a computer or reading can also increase the chances of developing myopia.

Sucharitra Picasso · Accepted Answer

Hi,

Myopia, also known as near-sightedness and short-sightedness, is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus. It does not affect focus when looking at a close object.
Myopia presents with blurry distance vision, but generally gives good near vision. In high myopia, even near vision is affected as objects must be extremely close to the eyes to see clearly, and people with myopia cannot read without their glasses prescribed for distance.

Causes:
Nearsightedness happens when your eye is longer than normal, or, less often, when your cornea is too curved. It?s a problem in the focusing mechanism of the eyes. However, the exact cause of myopia is not known.

Two key risk factors:

Family history. If one or both parents are nearsighted, the chance of their children developing it increases.
    Working up close. Myopia may be helped along by how a person uses their eyes. Intense detail work, long hours in front of a computer or reading can also increase the chances of developing myopia.