Ophthalmology A child with dry skin and scaling is suspected of having vitamin A deficiency. What is the earliest feature of vitamin deficiency? A Conjunctival xerosis B Nyctalopia C Retinopathy D Pain 💡 Explanation A child with dry skin and scaling is suspected of having vitamin A deficiency. What is the earliest feature of vitamin deficiency? ✓ Correct Answer: B. Nyctalopia