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': 'Which of the following is the most highly innervated structure of eye \nSelect and explain. \nA. Iris, B. Cornea, C. Retina, D. Sclera', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cornea- The highest innervated structure of the eye Anatomy of cornea: Transparent Avascular structure Refractive power - 45 D Refractive index - 1.37 Thickness (least in centre) (r) 530-550 mm Diameter: 10.5-12.5 mm. Veical diameter < Horizontal diameter. Nerve Supply Most innervated organ of body. Corneal nerves are non myelinated after 2 cm after entering cornea. Branches of Long ciliary nerves that are branches of nasociliary nerves supply it.', 'role': 'assistant'}]