Neuro-ophthalmology & Squint · NEET PG Preparation Ophthalmology
A patient has straight eyes when both eyes are open, but each eye makes a small refixation movement when the fellow eye is covered during the alterna…
Practice question from Neuro-ophthalmology & Squint (NEET PG Preparation Ophthalmology), with the correct answer and a step-by-step solution.
easy · MCQ · Q-33F048
A patient has straight eyes when both eyes are open, but each eye makes a small refixation movement when the fellow eye is covered during the alternate cover test. What is the most likely diagnosis?
- A.Manifest strabismus (heterotropia)
- B.Latent strabismus (heterophoria)Correct answer
- C.Internuclear ophthalmoplegia
- D.Congenital nystagmus
Solution
A heterophoria is a latent deviation controlled by binocular fusion, so the eyes appear aligned with both eyes open and deviate only when fusion is interrupted. The alternate cover test dissociates the eyes and reveals this deviation.
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