What causes myopia and hyperopia?

Answer 1

Nearsightedness and farsightedness are caused by light falling somewhere other than directly on the retina. Normally, light enters the eye through the lens and shines directly on the back of the eye called the retina. This is important because the retina is where all the receptors are, and they convert the light into nerve signals that are sent to the brain.

In nearsightedness, light comes through the eye and lands in front of the retina, causing images far away to appear blurred. This can be caused by a curvature in the cornea or lens that is misdirecting the light, or by the shape of the eye itself. If the eye is longer than normal, light may fall in front of the retina.

In farsightedness, light falls behind the retina, so that images close up appear blurred.This can also be caused either by the curvature of the lens or cornea, or by the shape of the eye. In the case of farsightedness, the eye may be shorter than normal.

Answer 2

• Hyperopia is a condition in which an image of a distant object becomes focused behind the retina, making objects up close appear out of focus.
• Myopia is a condition in which, opposite of hyperopia, an image of a distant object becomes focused in front of the retina, making distant objects appear out of focus.
• Myopia is the most common refractive error seen in children and can be corrected with eyeglasses or contact lenses.

Answer 3

Myopia (nearsightedness) is caused by the eyeball being too long or the cornea being too curved, causing light to focus in front of the retina. Hyperopia (farsightedness) is caused by the eyeball being too short or the cornea being too flat, causing light to focus behind the retina. Both conditions result in blurred vision at different distances.

Answer 4

the eye causes the eye to be near sighted or far sighted