Initial experience with a new refractive rotationally asymmetric multifocal intraocular lens

Area of Science:

• Ophthalmology
• Refractive Surgery
• Biomedical Engineering

Background:

• Refractive lens exchange (RLE) is an alternative to LASIK for correcting refractive errors.
• Multifocal intraocular lenses (IOLs) aim to provide spectacle independence at multiple distances.

Purpose of the Study:

• To evaluate the efficacy, safety, predictability, and patient satisfaction with the SBL-3 rotational asymmetric multifocal IOL after RLE.
• Assess visual outcomes at distance, intermediate, and near visual ranges.

Main Methods:

• Bilateral RLE with SBL-3 IOL implantation in 53 patients (106 eyes).
• Preoperative refractive error assessment (sphere and cylinder).
• Postoperative evaluation at 3 months including visual acuities (distance, intermediate, near), defocus curve, and patient satisfaction.

Main Results:

• 84.9% of eyes achieved emmetropia within ±0.50 D at 3 months.
• Excellent uncorrected distance and near visual acuities were recorded (monocular and binocular).
• High patient satisfaction reported, despite some night vision phenomena and a slight decrease in intermediate vision clarity.

Conclusions:

• The SBL-3 multifocal IOL demonstrates good visual performance across a range of distances post-RLE.
• Further long-term studies are required to fully ascertain the sustained performance and safety profile of this IOL.