Because of circle of least diffusion, the distant vision is comparatively good in
Correct Answer: Mixed astigmatism
Description: At point D, the divergence of veical rays is exactly equal to the convergence of the horizontal rays from the axis. So here the section is a circle, which is called the circle of least diffusion. Mixed astigmatism: refers to a condition where in the light rays in one meridian are focused in front and in other meridian behind the retina. Thus in one meridian eye is myopic and in another hypermetropic. Such patients have comparatively less symptoms as &;circle of least diffusion&; is formed on the retina. Reference :- A K KHURANA; page:-25,26,37
Category:
Ophthalmology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now