what mirrors are used to make spectacle
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concave and convex lens
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It depends upon your problem of eye. Which type of defect of vision you are suffering from.
If you are suffering from myopia that means you can see nearby objects clearly and cannot see far objects clearly in this case we should use spectacle with concave lens. In case of hypermetropia we should use convex lens. There is a one more eye defect known as presbyopia in which it is difficult to focus nearby as well as far objects clearly so in this case both the lenses are used to make spectacles.
If you are suffering from myopia that means you can see nearby objects clearly and cannot see far objects clearly in this case we should use spectacle with concave lens. In case of hypermetropia we should use convex lens. There is a one more eye defect known as presbyopia in which it is difficult to focus nearby as well as far objects clearly so in this case both the lenses are used to make spectacles.
ishanpandey007:
correct your que mirrors are not used in spectacles
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