Myopia
Nearsightedness is when light entering the eye is focused incorrectly, making distant objects appear blurred. Nearsightedness is a type of refractive error of the eye. A.D.A.M. If you are nearsighted, you have trouble seeing things that are far away. Causes, incidence, and risk factors. People are able to see because the front part of the eye bends (refracts) light and points it to the back surface of the eye, called the retina. Nearsightedness occurs when the physical length of the eye is greater than the optical length. Answer by Gani Kurniawan. Confidence votes 1.4K. Nearsightedness is called myopia, and farsightedness is known as hyperopia. The main biological difference in the two is that in myopia, the images seen are focused in front of the retina, rather than directly on the retina.  Myopia. For vision to be clear, light entering your eye needs to be focused accurately on your retina. Light entering your eye is first focused by the cornea and then fine focused by the lens. This focusing system of your eye makes sure that when light enters your eye it is sharply in focus as it hits the retina.  myopia. n. 1. (Pathology) inability to see distant objects clearly because the images are focused in front of the retina; short-sightedness. [C18: via New Latin from Greek muōps short-sighted, from mūein to close (the eyes), blink + ōps eye]. (mī-ō′pē-ə). myopia. top: normal eye with light focused on the retinabottom:myopic eye with light focused in front of the retina. Corrective lenses. Wearing corrective lenses treats nearsightedness by counteracting the increased curvature of your cornea or the increased length of your eye. Types of corrective lenses include: 1  Eyeglasses. 2  This is a simple, safe way to correct vision problems caused by myopia. The causes of hyperopia are typically genetic and involve an eye that is too short or a cornea that is too flat, so that images focus at a point behind the retina. The opposite of hyperopia is myopia. People with hyperopia can experience blurred vision, asthenopia, accommodative dysfunction, binocular dysfunction, amblyopia, and strabismus, another condition that frequently causes blurry near vision. What is myopia. Myopia, commonly called shortsightedness, is a condition in which light is focussed in front of the retina, resulting in blurred vision. Shortsighted people can often see reasonably clearly at short distances, but will not be able to see distant objects clearly.  Nearsightedness (myopia). Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. Nearsightedness may develop gradually or rapidly, often worsening during childhood and adolescence. Nearsightedness tends to run in families. 
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002018/ http://www.answers.com/Q/What_is_nearsightedness_and_farsightedness http://www.rnib.org.uk/eye-health-eye-conditions-z-eye-conditions/myopia-and-high-degree-myopia http://www.thefreedictionary.com/myopia http://www.mayoclinic.org/diseases-conditions/nearsightedness/basics/treatment/con-20027548 https://en.wikipedia.org/wiki/Hyperopia http://www.optometry.org.au/your-eyes/your-eye-health/eye-conditions/myopia.aspx http://www.mayoclinic.org/diseases-conditions/nearsightedness/basics/definition/CON-20027548
what is nearsightedness called