Nd:YAG laser capsulotomy is performed for posterior capsule opacification. The estimated percentage of PCO requiring capsulotomy within 5 years of modern acrylic IOL implantation with a sharp square-edge design is approximately:

• A 20–30%
• B 50–60%
• C 70–80%
• D 5–10% ✓

Explanation

Modern hydrophobic acrylic IOLs with sharp square posterior edges (e.g., AcrySof) have dramatically reduced PCO rates. The Nd:YAG capsulotomy rate with these lenses is approximately 5–10% at 5 years, compared to 25–50% with PMMA lenses. The sharp edge creates a mechanical barrier (bend-forward effect) that prevents posterior migration of residual lens epithelial cells. This is a critical advantage of modern IOL design, as Nd:YAG carries risks including IOP spike, retinal detachment, and IOL pitting.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.