Social & Preventive Medicine Xerophthalmia is considered a problem in a community if:- A Night blindness >1% B Bitot spots >1% C Corneal ulceration > 0.05% D Corneal ulcer >0.5% 💡 Explanation Xerophthalmia is considered a problem in a community if:- ✓ Correct Answer: A. Night blindness >1%