Question

Astigmatism results in eye strain. What exactly happens in astigmatism?

• A. Decrease in vision of eye
• B. Difficulty in sighting distant objects
• C. Difficulty in sighting nearby objects
• D. Inability to focus on horizontal and vertical lines simultaneously

Answer 1

The correct option is D Inability to focus on horizontal and vertical lines simultaneously

Astigmatism is a common vision problem caused by an error in the shape of the cornea of the eye. Due to the irregular shape of the cornea a person is not able to focus on both horizontal and vertical lines simultaneously, hence the blurred vision is observed in this defect and as the individual tries to focus the eye for clear vision eye straining is a common occurence followed by headache. This defect can be easily corrected by using cylindrical lenses in spectacles