A 3-year-old girl from rural Odisha presents with night blindness and Bitot's spots on bilateral conjunctivae. Her mother reports the child has been eating a diet poor in leafy vegetables and animal products for the past 6 months. Visual acuity is 6/9 in both eyes. What is the most appropriate immediate management?

Explanation

## Clinical Context This child presents with **stage X1B xerophthalmia** (Bitot's spots = conjunctival xerosis with foamy patches) and night blindness, indicating **early but established vitamin A deficiency**. The visual acuity is preserved, and there is no corneal involvement. ## Management Approach **Key Point:** The WHO/UNICEF protocol for vitamin A deficiency in children is based on clinical stage and age. For **X1B (Bitot's spots) without corneal disease**, oral high-dose vitamin A is the standard of care. ### Correct Answer: Oral Vitamin A 200,000 IU **High-Yield:** WHO recommends: - **Day 1:** 200,000 IU orally - **Day 2:** 200,000 IU orally (repeat) - **Day 15 (after 2 weeks):** 200,000 IU orally (third dose) This regimen rapidly replenishes hepatic stores and prevents progression to corneal disease. **Clinical Pearl:** Oral supplementation is preferred in **non-corneal xerophthalmia** because: - Better absorption and sustained tissue levels - Lower risk of toxicity than IV dosing - Suitable for ambulatory management - Cost-effective in resource-limited settings ## Rationale for This Stage | Stage | Clinical Sign | Management | |-------|---------------|-------------| | **XN** | Night blindness only | Oral 200,000 IU (3-dose protocol) | | **X1A** | Conjunctival xerosis | Oral 200,000 IU (3-dose protocol) | | **X1B** | Bitot's spots | Oral 200,000 IU (3-dose protocol) | | **X2** | Corneal xerosis | IV 100,000 IU (urgent) | | **X3A/X3B** | Corneal ulceration/scarring | IV 100,000 IU + topical + referral | **Key Point:** Once corneal involvement occurs (X2 or beyond), IV therapy becomes necessary. This child does not have corneal disease yet, so oral therapy is appropriate. ## Prevention of Relapse **Tip:** After acute supplementation, ensure: - Dietary counselling (leafy greens, fortified foods, eggs, liver) - Prophylactic doses: 200,000 IU every 6 months in endemic areas - Treatment of underlying malnutrition and infections