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: Social & Preventive Medicine
[{'content': 'About National Programme for Control of Blindness (NPCB), all are true except \nSelect and explain. \nA. Increase cataract surgery rate to 450 operations per one lac population, B. 100% coverage of vitamin A prophylaxia doses from 9 months to 3 years age, C. Intra-ocular lens implanation in more than 80% of cataract surgery cases, D. Development of 50 paediatric ophthalmology units', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Targets for X five year plan under vision 2020.\n\nIncrease cataract surgery rate to 450 operations per one lac population\nImprove visual outcome (>6/18) after cataract surgery in 80%\nIntra-ocular lens implantation in > 80% of cataract surgery cases\nDevelopment of 50 paediatric ophthalmology units in tertiary care hospitals.\nScreen known diabetics for diabetic retinopathy\nScreen for glaucoma for those > 35 years attending eye clinics\nBasic refraction services available in all districts\n4000 vision centres manned by trained optometrist/Refractionist/Ophthalmic Assistant\nLow vision centres at 50 centres of excellence/tertiary centres\n25 fully functiona, accredited safe eye banks\nMMR replace Measles vaccine, coverage >60\n75% coverage for regular vitamin A supplementation (till 5 years age)', 'role': 'assistant'}]