This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
[{'content': 'Ascorbic acid transpo in cornea is mediated by \nSelect and explain. \nA. Carbonic anhydrase pump, B. Na K pump, C. Myoinositol pump, D. Passive diffusion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Metabolism of Cornea *Main Metabolic pathway: Aerobic *Ascorbic acid transpo: Na K ATPase > Myoinositol *Cornea becomes edematous due to lactate accumulation that happens during hypoxic conditions such as prolonged contact lens use. *Oxygen is derived from environment & glucose from aqueous humor. *Vitamins and amino acids are also provided by the limbal cappilaries', 'role': 'assistant'}]