Physics · Optics
An eye defect known as 'Astigmatism' occurs when:
- 1the eye lens becomes cloudy.
- 2the image of an object is focused at a point in front of the retina.
- 3the image of an object is focused at a point behind the retina.
- 4the cornea is not spherical in shape.✓
Correct answer
the cornea is not spherical in shape.
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