Visual Performance and Subjective Outcomes with Enhanced Monofocal Intraocular Lens Implantation Targeted for...

Area of Science:

• Ophthalmology
• Biomedical Engineering

Background:

• Cataract surgery often involves intraocular lens (IOL) implantation to restore vision.
• Enhanced monofocal IOLs aim to provide a broader range of vision compared to traditional monofocal IOLs.
• Targeting emmetropia or monovision are common strategies to optimize visual outcomes post-IOL surgery.

Purpose of the Study:

• To evaluate the visual performance and patient-reported outcomes of the RayOne EMV enhanced monofocal IOL.
• To compare outcomes between bilateral emmetropia and modest monovision targeting strategies.

Main Methods:

• A prospective, single-centre, comparative, interventional study involving 60 patients.
• Patients were assigned to bilateral emmetropia or modest monovision (-1.50 D in the near eye).
• Visual acuities (distance, intermediate, near) and defocus curves were measured; patient satisfaction was assessed using the Catquest 9-SF questionnaire.

Main Results:

• The monovision group showed significantly better visual acuity at -1.00 D to -4.00 D defocus compared to the emmetropia group.
• The monovision group achieved a wider defocus range (2.5 D) for good visual acuity compared to the emmetropia group (1.3 D).
• Patient satisfaction was high in both groups (90% emmetropia, 96% monovision), with monovision reporting better intermediate and near task performance.

Conclusions:

• Bilateral emmetropia targeting with the enhanced monofocal IOL provides good functional intermediate vision.
• Modest monovision targeting enhances intermediate and near vision, with high patient satisfaction.
• The RayOne EMV enhanced monofocal IOL demonstrates good visual performance and patient satisfaction for both emmetropia and monovision strategies.