According to WHO , blindness is defined as a visual acuity of the better eye, less than -: (A) Jun-60, (B) May-60, (C) Apr-60, (D) Mar-60
Answer is D. <p> WHO defines blindness if the visual acuity is less than 3/60. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:401. <\p>