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Are More People Nearsighted Or Farsighted?

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enotes | Valedictorian

Posted October 9, 2011 at 4:00 PM via web

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Are More People Nearsighted Or Farsighted?

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fact-finder | Valedictorian

Posted October 10, 2011 at 4:00 PM (Answer #1)

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About 30 percent of Americans are nearsighted, to some degree, and about 60 percent are farsighted. Nearsighted people have trouble focusing on an image in the distance while farsighted people have trouble focusing on an image close up.

The brain receives a sharply focused picture when light rays entering the pupils of the eye converge (come together) at a single point on the retina. However, if the eyeball is at all misshapen, the light rays will converge at a point in front of the retina (nearsightedness), or behind the retina (farsightedness). Both situations result in blurry vision.

Convex lenses are prescribed to correct farsightedness and concave lenses are prescribed to correct nearsightedness.

Source: Prevention's Giant Book of Health Facts, p. 518.

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atyourservice | TA , Grade 10 | Valedictorian

Posted March 23, 2014 at 6:08 PM (Answer #2)

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More people are farsighted

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fashionableb1 | TA , Grade 10 | Salutatorian

Posted March 24, 2014 at 8:26 PM (Answer #3)

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More people are farsighted

 
 
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zumba96 | TA , Grade 11 | Valedictorian

Posted May 17, 2014 at 10:22 PM (Answer #4)

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More people are known to be farsighted which results in issue of seeing in distance. 

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givingiswinning | TA , Grade 10 | Valedictorian

Posted July 31, 2014 at 12:00 PM (Answer #5)

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Farsighted

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fashionableb1 | TA , Grade 10 | Salutatorian

Posted July 31, 2014 at 10:59 PM (Answer #6)

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Farsighted

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taangerine | TA , Grade 11 | Valedictorian

Posted August 16, 2014 at 12:20 AM (Answer #7)

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More people are farsighted. 

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