A defect of vision in which the points in one plane of an object appear in focus while those in another plane are out of focus is called
A. Myopia
B. Hypermetropia
C. Astigmatism
D. Distortion
Answer:C
A defect of vision in which the points in one plane of an object appear in focus while those in another plane are out of focus is called
A. Myopia B. Hypermetropia C. Astigmatism D. Distortion