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Ophthalmology Strabismus 65668eff

A 26 years old male with restriction of eye movements in all directions and moderate ptosis but with no Diplopia or squint. Diagnosis is

A
Thyroid ophthalmopathy
B
Chronic progressive external ophthalmoplegia
C
Myasthenia gravis
D
Multiple cranial nerve palsies
High-Yield Explanation
Ans. (b) Chronic progressive external ophthalmoplegiaRef: Kanski 7/e, p. 852Restriction of ocular movement in both eyes are symmetrical in chronic progressive external ophthalmoplegia, so there is no diplopia.
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