Different types of lens used for correcting the eye defects informa
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Myopia can be corrected by wearing glasses/contacts with concave lenses these help to focus the image on the retina.
Hyperopia can be corrected by wearing glasses/contacts that contain convex lenses.
Astigmatism can usually be corrected by using a special spherical cylindrical lens; this is placed in the out-of-focus axis.
Hyperopia can be corrected by wearing glasses/contacts that contain convex lenses.
Astigmatism can usually be corrected by using a special spherical cylindrical lens; this is placed in the out-of-focus axis.
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