This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Squint, Subject name: Ophthalmology
Which of the following is not a feature of chronic progressive external ophthalmoplegia 
Select and explain. 
A. Stas with bilateral ptosis, B. May be associated with hea block., C. Finally ocular motility palsy, D. Significant diplopia
D: Significant diplopia
Answer: D: Significant diplopia 
Explanation: Chronic Progressive External Ophthalmoplegia No diplopia since it is bilaterally symmetrical No neurological involvement. Progressive generalized muscular disorder. Stas with bilateral ptosis, is symmetrical. Finally ocular motility palsy followed by paralysis occurs.