This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Strabismus - Definition and Evaluation, Subject name: Ophthalmology
Exotropia occurs due to - 
Select and explain. 
A. Third nerve palsy, B. Optic neuritis, C. Abducens injury, D. Papilloedema
A: Third nerve palsy
Answer: A: Third nerve palsy 
Explanation: Ans. is 'a' i.e. Third Nerve Palsy Causes and associations of exotropia (Divegent squint)o Third nerve palsyo Congenitalo Previous strabismus surgeryo Thyroid ophthalmopathyo Iatrogenic trauma following retinal detachment surgery