The Roper-Hall classification of chemical eye burns is based on:
- A Depth of corneal stroma involved and extent of choroidal ischemia
- B Degree of corneal clarity and extent of perilimbal ischemia (limbal involvement) ✓
- C Visual acuity at presentation and conjunctival chemosis
- D IOP elevation and presence of anterior chamber reaction
Correct answer: B. Degree of corneal clarity and extent of perilimbal ischemia (limbal involvement)
Explanation
The Roper-Hall classification (Grades I–IV) grades ocular chemical burns based on two parameters: (1) corneal clarity (clear, haze but visible iris, haze obscuring iris, totally opaque) and (2) degree of limbal ischemia (none, < 1/3, 1/3–1/2, > 1/2 of limbus ischemic). Grade I has the best prognosis; Grade IV (totally opaque cornea + > 1/2 limbal ischemia) has the worst. Limbal ischemia reflects compromise of limbal stem cells critical for corneal epithelial regeneration.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.