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[Artificial intraocular lenses].

C Skorpik1

  • 11. Universitäts-Augenklinik, Wien.

Fortschritte Der Ophthalmologie : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|January 1, 1990
PubMed
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Comparing intraocular lens (IOL) implantation methods, posterior chamber lenses are preferred. However, anterior chamber lenses with specific designs show promise, while others carry high complication risks.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering

Background:

  • Current standard practice favors posterior chamber lens implantation after extracapsular cataract extraction (ECCE) or phacoemulsification.
  • Previous literature suggests good outcomes with intracapsular cataract extraction (ICCE) and anterior chamber lens implantation, but direct comparative data is lacking.

Purpose of the Study:

  • To statistically compare different intraocular lens (IOL) implantation methods, including anterior and posterior chamber approaches.
  • To evaluate the safety and efficacy of various IOL designs and materials.

Main Methods:

  • Review of existing literature and case series on anterior and posterior chamber lens implantation.
  • Analysis of IOL designs, materials (PMMA, prolene), and haptic configurations (open vs. closed loops).

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Main Results:

  • Semiflexible monoblock PMMA anterior chamber lenses with open loops (multiflex style) appear optimal.
  • Rigid anterior chamber lenses (Choyce style) require precise fitting; closed-loop lenses (e.g., stable flex) have high complication rates and should be avoided.
  • Posterior chamber lenses, often PMMA with PMMA loops (e.g., Simcoe style), implanted in the capsular sac yield satisfactory results.

Conclusions:

  • While posterior chamber lenses are standard, specific anterior chamber lens designs offer viable alternatives.
  • Careful selection of IOL type, material, and haptic design is crucial for successful cataract surgery outcomes.
  • Further investigation is needed for newer lens designs like flexible open-loop anterior chamber lenses.