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
Macular edema is caused by all except – 
Select and explain. 
A. Micro aneurysm, B. Capillary dilatation, C. Neovascularization, D. None
D: None
Answer: D: None 
Explanation: Causes of macular edema :-

Metabolic alteration :- Diabetes, retinitis pigmentosa, inherited cystoid macular edema (CME).
Ischemia CRVO, Diabetic retinopathy, severe hypertensive retinopathy, HELLP syndrome, vasculitis.
Mechanical force :- Vitreous traction on the macula.
Inflammation :- Intermediate uveitis, post-operative CME, choroidal inflammatory diseases.
Pharmacotoxicity :- Epinephrine (in Aphakia), Betaxolol, latanoprost..