Effect of a plano-convex posterior chamber lens on capsular opacification from Elschnig pearl formation

J Cataract Refract Surg. 1988 Jan;14(1):68-72. doi: 10.1016/s0886-3350(88)80067-1.


Opacification of the posterior capsule occurs most commonly from Elschnig pearl migration or fibrosis. The physical contact of a posterior chamber lens, particularly one with a reverse optic, has been postulated to decrease the rate of capsular opacification by creating a barrier to Elschnig pearl migration. This randomized prospective clinical study comparing the 3M style 34S convex-plano optic and style 34R plano-convex (reverse) optic posterior chamber lens demonstrated a statistically significant reduction in capsular opacification by Elschnig pearls at one year in the reverse optic lenses (18.2% versus 7.6%, P = .03). No statistically significant difference in capsular fibrosis rates was noted (2.5% versus 4.5%, P = .48). The reverse optic implant also demonstrated greater iris to implant optic clearance.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Cataract / etiology*
  • Cataract Extraction*
  • Evaluation Studies as Topic
  • Humans
  • Lens Diseases / complications*
  • Lenses, Intraocular*
  • Middle Aged
  • Prospective Studies
  • Random Allocation