Collect the different types of lenses used for correcting the eye defects and write a report

CBSE Class 10 CBSE Class 10 Science
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Different types of lenses for correcting the eye-defects are :
i) Bi concave lens : It is used to correct Myopia.
ii) Bi convex lens : It is used to correct Hypermetropia.
iii) Bi-focal lens : It is used to correct Presbyopia.
iv) Cylindrical lens : It is used to correct Astigmalism.