This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Strabismus, Subject name: Ophthalmology
[{'content': 'Which is most consistent with accommodative esotropia? \nSelect and explain. \nA. Dissociated vertical deviation, B. Onset from infancy to 4 years of age, C. Hypermetropia of 8.00 D, D. Poor to no binocular potential', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Onset from infancy to 4 years of ageRef: Kanski 7/e, p. 768-769Option a - feature of Essential infantile esotropia.Option b - most neonates are not accommodating, so the esotropia is acquired when the infant starts to accommodate to bring near objects to focus.As a result of Hypermetropia (2-3 D at birth) in the child, additional accommodative effort is required to bring the images into focus, and thus over convergence response is seen (Near reflex has 3 parts: Accommodation, convergence and miosis).Option c - accommodative esotropia(s) are usually hypermetropic, but rarely more than 7.00 D.If more than that, both eyes become amblyopic without correction.Option d - the binocular potential is normal. Accommodative esotropia is due to an exaggerated near reflex.', 'role': 'assistant'}]