Ophthalmology · Lens and Cataract (Types, Surgery, IOL, Complications)

During phacoemulsification, posterior capsule rupture (PCR) with vitreous loss occurs. The surgeon converts to manual small incision cataract surgery (MSICS) and completes cortical clean-up. Which IOL should be implanted?

  • A Single-piece acrylic IOL in the capsular bag
  • B Three-piece foldable IOL in the sulcus with optic capture through the capsulorhexis
  • C Anterior chamber IOL of angle-supported design
  • D Iris-claw lens sutured to iris
Correct answer: B. Three-piece foldable IOL in the sulcus with optic capture through the capsulorhexis

Explanation

With PCR and adequate anterior capsular rim remaining, a three-piece IOL (with PMMA/poly-PVDF haptics) should be placed in the ciliary sulcus. Optic capture — pushing the optic posteriorly through the capsulorhexis edge while haptics rest in the sulcus — provides stable posterior IOL fixation and reduces UGH (uveitis-glaucoma-hyphema) syndrome risk compared to bare sulcus placement. Single-piece AcrySof IOLs have large angulated haptics designed for capsular bag placement; sulcus placement of single-piece IOLs causes chronic chafing of the uvea leading to UGH syndrome. Three-piece IOLs have thinner, smoother haptics compatible with sulcus placement.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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