Straylight Measurements in Two Different Apodized Diffractive Multifocal Intraocular Lenses

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Optics

Background:

• Intraocular lenses (IOLs) are crucial for vision restoration after cataract surgery.
• Multifocal IOLs aim to provide clear vision at multiple distances.
• Straylight is a significant factor affecting visual quality, especially in pseudophakic eyes.

Purpose of the Study:

• To compare straylight levels between hydrophilic Seelens MF and hydrophobic SN6AD1 multifocal IOLs.
• To evaluate visual acuity and refractive outcomes following implantation of these two IOL models.

Main Methods:

• Prospective cohort study design.
• Straylight measurements using C-Quant device 3 months post-implantation.
• Comparison of visual acuity (CDVA) and refractive error between IOL groups.

Main Results:

• The Seelens MF IOL group (84 eyes) exhibited significantly lower straylight (0.08 log(s) difference, P=.01) compared to the SN6AD1 IOL group (79 eyes).
• Both IOLs achieved comparable corrected distance visual acuity (CDVA) and mean postoperative refractive outcomes.
• Seelens MF IOL: CDVA logMAR -0.03 ± 0.06, Refraction +0.01 ± 0.43 D.
• SN6AD1 IOL: CDVA logMAR -0.02 ± 0.08, Refraction +0.06 ± 0.35 D.

Conclusions:

• The Seelens MF IOL demonstrated a statistically significant reduction in straylight compared to the SN6AD1 IOL.
• Despite the straylight difference, both multifocal IOLs yielded equivalent visual acuity and refractive results.
• Further research is warranted to elucidate the clinical implications of the observed straylight variations.