Youtor
Presbyopia
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http://youtube.com/watch?v=nnpgOpHo3wE
#myopia • Which are the most common eye defects in human beings? Some of us are not able to see the objects close to us while some are unable to see the objects far away. • DEFECTS OF VISION : • 1. Myopia • 2. Hypermetropia • 3. Presbyopia • Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. It occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina. • Hypermetropia (long-sightedness) is a common eye condition where nearby objects appear blurred, but your vision is clearer when looking at things further away. • Class 10 physics chapter Human eye and colorful world. • Follow our Facebook page @conceptbosterno1
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