Question Detail

PHY 104 The Human Eye Objective Question
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Question

Which of the following best describes the visual defect known as astigmatism?
Options
A Rays from an object at infinity are focused in front of the retina.
B The image of an object at infinity is formed behind the retina.
C The surface of the cornea has a distorted shape, causing horizontal and vertical lines to focus in different planes.
Correct Answer
D The near point recedes due to age, making close objects difficult to see.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The text defines astigmatism as a defect "in which the surface of the cornea is not spherical but has a somewhat distorted shape. As a result, horizontal lines may be imaged in a different plane from vertical lines."

Hint

Recall the specific corneal irregularity associated with astigmatism mentioned in the document.

Question Info

Course: PHY 104
Topic: The Human Eye
Type: Objective
Difficulty: Not specified
Question 627 of 947
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