Social & Preventive Medicine The estimation of prevalence of blindness by blind school survey in place of population-based survey would lead to: A Over-estimate B Under-estimate C There would be no difference D Both of the methods are not to be used for this 💡 Explanation The estimation of prevalence of blindness by blind school survey in place of population-based survey would lead to: ✓ Correct Answer: C. There would be no difference