Write down any four difference between long sightdness and short sightdness?
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Short-sightedness.
If you'reshort-sighted (myopic), you will have trouble seeing objects at a distance. ...Short-sightedness (myopia) occurs when your eye is toolong from front to back or your cornea's curve is too steep. As a result, light focuses in front of the retina, making objects in the distance appear blurred.
You may be able to see distant objects clearly, but closer objects are usually out of focus. It often affects adults over 40, but can affect people of all ages – including babies and children. The medical name for long-sightedness is hyperopia or hypermetropia.
If you'reshort-sighted (myopic), you will have trouble seeing objects at a distance. ...Short-sightedness (myopia) occurs when your eye is toolong from front to back or your cornea's curve is too steep. As a result, light focuses in front of the retina, making objects in the distance appear blurred.
You may be able to see distant objects clearly, but closer objects are usually out of focus. It often affects adults over 40, but can affect people of all ages – including babies and children. The medical name for long-sightedness is hyperopia or hypermetropia.
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To correct nearsightedness concave lens spectacles are used and to correct farsightedness convex lens specs are used
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