This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Community Ophthalmology, Subject name: Ophthalmology
Economic blindness is defined as: 
Select and explain. 
A. Vision < 6/60 to 3/60, B. Vision < 3/60 to 1/60, C. Vision < 1/60 to Finger counting, D. No PL
A: Vision < 6/60 to 3/60
Answer: A: Vision < 6/60 to 3/60 
Explanation: Economic Blindness: Vision < 6/60 to 3/60 Definitions:- * Economic Blindness: < 6/60-3/60 * Social Blindness < 3/60- 1/60 * Legal Blindness < 1/60 to perception of light