This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
[{'content': 'Thickest poion of sclera is - \nSelect and explain. \nA. Anterior to rectus muscle inseion, B. Posterior to rectus musde inseion, C. Posterior pole, D. Limbus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Thickness of sclera varies considerably in differentindividuals and with the age of the person. It isgenerally thinner in children than the adults and infemales than the males. Sclera is thickest posteriorly(1mm) and gradually becomes thin when tracedanteriorly. It is thinnest at the inseion of extraocularmuscles (0.3 mm). REF:Comprehensive ophthalmology,20th edition,AK Khurana,pg no.127.', 'role': 'assistant'}]