Elaborate on any three defects of eyes and also mention how can they be corrected?
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MYOPIA or NEARSHIGHTED. Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. ...
HYPEROPIA or FARESIGHTED. ...
ASTIGMATISM. ...
PRESBYOPIA.
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Although this is a defect that can be countered, severe myopia (power above -6) can lead to the detachment of retina which could result in loss of vision. Watch the video below to learn how and why spectacles/contact lenses are used to correct defects of vision and how exactly they affect the human eye.
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