Myopia (nearsightedness) affects 20% to 30% of the population, but this eye disorder is easily corrected with eyeglasses, contact lenses or surgery. People who have myopia or nearsightedness have difficulty seeing distant objects, but can see objects that are near clearly. For example, a person who is nearsighted may not be able to make out highway signs until they are just a few feet away. People who are nearsighted have what is called a refractive error. This means that the light rays bend incorrectly into the eye to transmit images to the brain. In people with myopia, the eyeball is too long or the cornea has too much curvature, so the light entering the eye is not focused correctly. Light rays of images focus in front of the retina, the light-sensitive part of the eye, rather than directly on the retina, causing blurred vision. Myopia runs in families and usually appears in childhood. Sometimes the condition plateaus, or sometimes it worsens with age. Myopia and astigmatism are sometimes mistaken as one. It is because they almost have exactly the same symptoms. Myopia is a condition where in the projected image is formed inside the eye, not on the retina, whereas, astigmatism is the irregular curvature of eye lenses, thus developing blurry sight. Myopia Astigmatism or myopic astigmatism is an optical defect where in the vision is blurred due to the inability of the eye to produce image on the retina. The eye optics is incapable of projecting clear images in the retina. This is caused by the irregular curvature of the cornea or lens. Myopia astigmatism is the worst condition of either the two disorders could ever get.
Symptoms
Fatigues or headaches
Very blurry vision
Working very closely at objects is always necessary
Deformed eyes or abnormal shape of the eyes
Teary and swollen eyes
Treatment
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More Information
www.medindia.net
www.raysahelian.com