This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'Critical age for development of fixation reflex is \nSelect and explain. \nA. 2-4 months, B. 6-8 months, C. 1-2 years, D. 4-6 years', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Impoant milestones in development of eye : Postnatal period Fixation stas developing in first month and is completed in 6 months. Macula is fully developed by 4-6 months Fusional reflexes, stereopsis and accommodation are well developed by 4-6 months Cornea attains normal adult diameter by 2 years of age. Lens grow throughout life Reference : A.K.Khurana; 6th edition; Page no:13', 'role': 'assistant'}]