A 32-year-old factory worker in Delhi sustains a splash injury with sodium hydroxide solution to both eyes. Regarding the acute management and prognostic factors in this case, all of the following are correct EXCEPT:

Question

Accepted Answer

D. Limbal stem cell damage and ischemia are the primary determinants of long-term morbidity; therefore, early surgical intervention within 24 hours is the standard of care to prevent symblepharon. ## Acute Alkali Burn Management and Prognosis

### Immediate Management Protocol

**Key Point:** The sequence of acute management in chemical eye injury is:

1. **Immediate Irrigation** (15–20 minutes minimum)
   - Normal saline preferred; tap water acceptable if saline unavailable
   - Evert eyelids; irrigate fornices thoroughly
   - Remove particulate matter (lime particles, etc.)
   - Continue until conjunctival pH is neutral (6.8–7.4)
   - May require 30+ minutes in alkali burns

2. **Post-Irrigation Topical Therapy**
   - Broad-spectrum antibiotics (to prevent secondary infection)
   - Cycloplegic agents (atropine 1% TID–QID to reduce ciliary spasm)
   - Lubricants (artificial tears, ointment)
   - **Topical corticosteroids** (controversial; used cautiously in first 2 weeks to reduce inflammation)

3. **Systemic Therapy**
   - Oral **vitamin C** (500 mg–2 g daily) — reduces collagen cross-linking and scarring
   - **NSAIDs** (indomethacin 50–75 mg daily) — reduce prostaglandin-mediated inflammation
   - Oral antibiotics if needed

**High-Yield:** Systemic vitamin C and NSAIDs are **evidence-based adjuncts** to reduce late scarring complications.

### Prognostic Factors (Roper Hall Classification)

| Grade | Corneal Opacity | Limbal Ischemia | Prognosis |
|-------|-----------------|-----------------|----------|
| **I** | Cornea clear | None | Excellent |
| **II** | Hazy; iris details visible | < 1/3 limbal area | Good |
| **III** | Opaque; iris details obscured | 1/3–1/2 limbal area | Guarded |
| **IV** | Opaque white; no iris details | > 1/2 limbal area | Poor |

**Clinical Pearl:** **Limbal ischemia** (not corneal opacification alone) is the **most reliable predictor of poor prognosis**. Limbal stem cells are critical for corneal epithelial regeneration; their loss leads to:
- Persistent epithelial defects
- Corneal neovascularization
- Symblepharon
- Entropion
- Eventual corneal scarring and blindness

### Why Option 3 Is INCORRECT

The statement "early surgical intervention within 24 hours is the standard of care to prevent symblepharon" is **FALSE**.

**Key Point:** Early surgical intervention is **NOT** the standard of care in acute alkali burns. Instead:
- **Medical management is first-line** during the acute phase (first 2–3 weeks)
- Surgery is reserved for **late complications** (after 3–6 months when inflammation has settled):
  - Symblepharon lysis and mucous membrane grafting
  - Limbal stem cell transplantation (for severe limbal damage)
  - Amniotic membrane transplantation (to promote epithelialization)
  - Keratoplasty (for corneal scarring)

**Warning:** Early surgery in the acute phase can worsen outcomes by increasing inflammation and promoting adhesion formation. The focus in the acute phase is **medical stabilization and prevention of further damage**, not surgical intervention.

Answer

A. Immediate copious irrigation with normal saline should be continued until the conjunctival pH returns to neutral (6.8–7.4), which may require 30 minutes or more

Answer

B. Topical antibiotics, cycloplegics, and lubricants should be instilled after irrigation; systemic NSAIDs and oral vitamin C are indicated to reduce inflammation and prevent scarring

Answer

C. The presence of corneal opacification involving more than one-third of the corneal surface at presentation is the most reliable predictor of poor visual prognosis

A 32-year-old factory worker in Delhi sustains a splash injury with sodium hydroxide solution to both eyes. Regarding the acute management and prognostic factors in this case, all of the following are correct EXCEPT:

Explanation

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