Impact of Artificial Lighting on Visual Acuity After Presbyopia Correction With an Extended Depth of Focus Intraocular Lens: Introduction of a Modified Luminous Efficiency Function V(λ)'

What this Trial Is About

Researchers are studying how extended-depth of focus (EDOF) intraocular lenses (IOLs) used in pseudophakic presbyopic correction affect eye light transmission and visual acuity. The study aims to develop a modified luminous efficiency function to better understand the total eye light transmittance in patients with these lenses. This observational study focuses on identifying lighting needs and adjustments for patients after implantation of EDOF IOLs compared to those with monofocal IOLs. Participants include two groups: those who had pseudophakic presbyopic correction with yellow filter EDOF IOLs like Vivity or Vivity toric, and a control group of similar age with monofocal or monofocal toric IOLs implanted during cataract surgery. The study observes natural outcomes without intervention, measuring how these different lenses influence the minimum light intensity needed for maximum visual acuity. During the study, participants’ visual acuity and eye light transmission will be assessed, focusing on the minimum required illuminance level six months after surgery. Researchers will examine visual performance under varying lighting conditions to determine appropriate lighting adjustments. Participants can expect periodic evaluations to measure their vision and light sensitivity as part of this study lasting up to six months postoperatively.

Luminous Efficiency Function V(λ)' of Patients That Underwent Pseudophakic Presbyopic Corrections With EDOF IOLs