Social & Preventive Medicine If blindness is surveyed using schools as compared to population surveys, then estimation of prevalence of blindness will have ? A Overestimation B Underestimation C Remains same D None of them is used for evaluation 💡 Explanation If blindness is surveyed using schools as compared to population surveys, then estimation of prevalence of blindness will have ? ✓ Correct Answer: B. Underestimation