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Apodized diffractive versus refractive multifocal intraocular lenses: optical and visual evaluation.

Beata Zelichowska1, Marek Rekas, Andrzej Stankiewicz

  • 1Ophthalmology Department, Military Health Service Institute, Warsaw, Poland.

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Summary

The AcrySof ReSTOR SN60D3 intraocular lens (IOL) demonstrated comparable distance and near visual acuity to the ReZoom IOL. However, the ReZoom IOL showed significantly worse optical quality and higher-order aberrations.

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Area of Science:

  • Ophthalmology
  • Optics
  • Biomedical Engineering

Background:

  • Multifocal intraocular lenses (IOLs) are widely used to correct refractive errors after cataract surgery.
  • Evaluating the optical and visual performance of different IOL designs is crucial for patient outcomes.

Purpose of the Study:

  • To compare the visual and optical performance of the AcrySof ReSTOR SN60D3 and ReZoom multifocal intraocular lenses (IOLs).

Main Methods:

  • A comparative study involving 46 patients (23 per group) who received bilateral implantation of either AcrySof ReSTOR SN60D3 or ReZoom IOLs.
  • Key metrics included uncorrected and best-corrected visual acuity (distance and near), photopic contrast sensitivity, and wavefront aberrations.
  • Measurements were conducted using standard visual acuity charts and a LADARWave Hartmann-Shack wavefront analyzer.

Main Results:

  • Both IOLs provided good uncorrected and best-corrected visual acuity under photopic conditions, with no significant difference between groups.
  • Photopic contrast sensitivity was within the normal range for both groups, but statistically significant differences were observed between them.
  • The ReZoom IOL group exhibited significantly higher levels of higher-order aberrations, including coma and spherical aberrations, compared to the ReSTOR group.

Conclusions:

  • Both AcrySof ReSTOR SN60D3 and ReZoom IOLs offer satisfactory visual performance for distance and near tasks in photopic conditions.
  • The AcrySof ReSTOR SN60D3 IOL demonstrated superior optical quality compared to the ReZoom IOL, with fewer higher-order aberrations.