This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health programmes in India, Subject name: Social & Preventive Medicine
Which one of the following is not a target disease under &;Vision 2020: The Right to Sight&;- 
Select and explain. 
A. Refractive error, B. Trachoma, C. Corneal blindness, D. Diabetic retinopathy
B: Trachoma
Answer: B: Trachoma 
Explanation: Vision 2020 The Right to Sight Target diseases are cataract, refractive errors, childhood blindness, corneal blindness, glaucoma, diabetic retinopathy. Ref: PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition pg 440