Question Detail

PHY 104 The Human Eye Objective Question

Question

Which of the following is a direct consequence of astigmatism, as described in the text?
Options
A Difficulty distinguishing between colors.
B Inability to focus clearly on both horizontal and vertical lines in a picture simultaneously.
Correct Answer
C Reduced peripheral vision.
D Seeing halos around lights at night.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The text explicitly states: 'As a result [of astigmatism], horizontal lines may be imaged in a different plane from vertical lines. Astigmatism may make it impossible, for example, to focus clearly on the horizontal and vertical lines in a picture at the same time.'

Hint

Astigmatism is related to different focal points for different orientations of light.

Question Info