This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
The most common ophthalmic affection of diptheria is – 
Select and explain. 
A. Ptosis, B. Total ophthalmoplegia, C. Isolated ocular palsies, D. Ophthalmoplegia extema
C: Isolated ocular palsies
Answer: C: Isolated ocular palsies 
Explanation: Complications 

Obstruction of the respiratory tract by pseudo membrane
Myocarditis
Polyneuropathy
Post diphtheritic paralysis
Occurs in the 3rd or 4th week
Palatine and papillary paralysis is characteristic
Spontaneous recovery is the rule.
Pneumonia
Other less common complications are renal failure, encephalitis, cerebral infarction, pulmonary embolism and bacteremia or endocarditic.