What is myopia?
Myopia, also known as nearsightedness, results when the cornea is steeper or the eye longer that average and light is focused in front of rather than directly on the retina. Near vision is clear, but distance vision is not, unless corrected by glasses, contact lenses, or procedures such as laser vision correction.
Read more: http://www.optometrist.com.au/shortsightedness.htm Myopia, also known as short sightedness or near sightedness, is the condition in which distant objects appear blurry. A shortsighted person may have good vision at close range, but will usually experience difficulties seeing details or objects that are far away.
If you can see nearby objects clearly without your glasses but objects farther away are blurry, you may have been diagnosed with myopia, the medical term for nearsightedness. You are not alone. More than 70 million people in the U.S. alone are being treated for myopia. Each individual experiences different degrees of myopia ranging from mild to extreme. The more blurred distant objects appear, the higher your eyeglass prescription will be, resulting in thicker lenses. The cause of all of these problems is the shape of your eye in relation to your cornea. Myopia occurs when your eye is too long for the cornea’s curvature. This arrangement causes light rays entering your eye to be focused in front of the retina instead of on the retina, producing a blurred image. Most prescriptions for myopia are less than -6.00 diopters. The table below illustrates the categories of severity for myopia: • Mild • Moderate • Severe • Extreme • <-3.00 diopters • -3.00 to -6.00 diopters • -6.00 to -9.00 dio
