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Negative implant. A retrospective study

M Landesz1, J G Worst, J V Siertsema

  • 1University Eye Clinic, Groningen, The Netherlands.

Documenta Ophthalmologica. Advances in Ophthalmology
|January 1, 1993
PubMed
Summary
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Negative power intraocular lenses (IOLs) offer surgical correction for high myopia. This study found that Fechner Worst Claw Lens implantation achieved good refractive outcomes, with 55.5% of cases corrected within 1 diopter of emmetropia.

Area of Science:

  • Ophthalmology
  • Refractive Surgery

Background:

  • High myopia presents significant challenges for surgical correction.
  • Negative power intraocular lenses (IOLs) are an option for correcting severe myopia.
  • The Fechner Worst Claw Lens was evaluated for its efficacy and safety.

Purpose of the Study:

  • To assess the refractive outcomes and complications associated with Fechner Worst Claw Lens implantation for high myopia.
  • To evaluate the effectiveness of the van der Heyde method for IOL power calculation.

Main Methods:

  • Retrospective study of 36 eyes implanted with Fechner Worst Claw Lenses between 1987 and 1991.
  • Preoperative myopia ranged from -7.00 to -30.00 diopters.
  • Follow-up data, including visual acuity and refractive error, were analyzed.

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Main Results:

  • 55.5% of eyes achieved correction within 1 diopter of emmetropia.
  • Best corrected visual acuity improved in 24 eyes.
  • One IOL required replacement due to calculation error; one case of endothelial decompensation occurred.

Conclusions:

  • Fechner Worst Claw Lens implantation can provide effective refractive correction for high myopia.
  • Careful IOL power calculation and avoiding corneal indentation are crucial for minimizing complications.
  • The IOL's proximity to the endothelium warrants attention to prevent complications like decompensation.