In gonioscopy, the most anteriorly visible structure in the angle is:
- A Trabecular meshwork
- B Schwalbe's line ✓
- C Scleral spur
- D Ciliary body band
Correct answer: B. Schwalbe's line
Explanation
Schwalbe's line (anterior limit of Descemet membrane/termination of corneal endothelium) is the most anteriorly visible structure in gonioscopy, appearing as a fine white ridge at the junction of cornea and angle. Moving posteriorly (towards the iris): Schwalbe's line → trabecular meshwork (pigmented posteriorly) → Schlemm's canal (seen as pink blush through trabecular meshwork) → scleral spur (white, posterior to Schlemm's canal) → ciliary body band (dark grey/brown, most posterior). The iris root inserts into the ciliary body band.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.