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
[{'content': 'Following anatomic factors predispose to glaucoma, EXCEPT: \nSelect and explain. \nA. Flat cornea, B. Increased length of eyeball, C. Shallow anterior chamber, D. Big size of ciliary body', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Anatomic risk factors for the development of acute angle closure glaucoma are small eyes with shallow anterior chamber, sho axial length, small corneal diameter, shallow limbal chamber depth and thick, relatively anteriorly positioned lens. Risk factors for primary open angle glaucoma: Age Race Family history Diabetes mellitus Thin central cornea Systemic hypeension REF: Pearls of Glaucoma Management edited by JoAnn A. Giaconi, page 415.', 'role': 'assistant'}]