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: Ophthalmology
Not a feature of orbital apex syndrome 
Select and explain. 
A. Ophthalmoplegia, B. Amaurosis, C. Anaesthesia of ophthamic nerve, D. Enophthalmos
D: Enophthalmos
Answer: D: Enophthalmos 
Explanation: A, b, c are triad of orbital apex syndrome.