Prospective visual evaluation of apodized diffractive intraocular lenses

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Optics

Background:

• Multifocal intraocular lenses (IOLs) are designed to correct vision at multiple distances.
• Apodized diffractive IOLs aim to provide a continuous range of vision.
• Evaluating visual performance and patient satisfaction is crucial for IOL selection.

Purpose of the Study:

• To assess distance, intermediate, and near visual performance in patients receiving multifocal apodized diffractive IOL implantation.
• To compare the visual outcomes and patient satisfaction between two specific multifocal IOL models.

Main Methods:

• A comparative study involving 325 patients with AcrySof ReSTOR (SA60D3) IOLs and 335 patients with AcrySof Natural ReSTOR (SN60D3) IOLs.
• Evaluated best corrected visual acuity (distance and near), intermediate visual acuity, and contrast sensitivity (photopic and mesopic).
• Patient satisfaction was assessed using a questionnaire.

Main Results:

• Both IOL models demonstrated excellent distance and near visual acuity (approximately 20/20).
• Intermediate visual acuity was significantly reduced for both IOLs.
• Photopic contrast sensitivity was normal; mesopic contrast sensitivity was comparable to monofocal IOLs.
• No significant differences were found between the two IOL models in visual acuity or contrast sensitivity.
• Patient satisfaction was high and comparable for both IOLs across different visual tasks and lighting conditions.

Conclusions:

• AcrySof ReSTOR and AcrySof Natural ReSTOR IOLs offer effective distance and near vision correction under various lighting conditions.
• Both IOL models result in reduced intermediate vision.
• These multifocal IOLs provide good visual outcomes and high patient satisfaction.