Choose the correct statement about astigmatism.
A. Astigmatism can be corrected using bifocal lense.
B. Seeing part of an object clearer than the rest of the object
C. This defect is caused by the uneven curvature of the retina or eye lens.
D. Objects appear blurry because the image is focused in front of the retina.
Preview next quiz:
A man can see the near objects clearly but cannot see distant objects clearly. Which type of lens should be used to correct his vision?
A. Concave lens
B. Convex lens
C. Cylindrical lens
D. No need any lens
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