This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Newborn eye is ? 
Select and explain. 
A. Myopic, B. Hypermetropic, C. Presbyopic, D. None of the above
B: Hypermetropic
Answer: B: Hypermetropic 
Explanation: Ans. is 'b' i.e., Hypermetropic Eye at bih Anteroposterior diameter of eye ball is about 16.5 mm (70% of adult size). Adult size is attained by 7-8 years. Corneal diameter is about 10 mm. Adult size (11.7 mm) is attained by 2 years of age. Anterior chamber is shallow and angle is narrow. Lens is spherical at bih. Retina :- Apa from macular area, the retina is fully differentiated. Macula differentiates 4-6 months after bih. Myelination of optic nerve fibres has reached the lamina cribrosa. New born is usually hypermetropic by +2 to +3D. Orbit is more divergent (50deg) as compared to adult (45deg). Lacrimal gland is still underdeveloped and tears are not secreted.