Video Experimental Relacionado

Updated: Jan 23, 2026

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

Published on: June 6, 2017

Comparación de resultados visuales y subjetivos entre dos lentes intraoculares de profundidad de foco extendida, con

Joaquin O De Rojas¹, Helga P Sandoval², Richard Potvin³

¹Center For Sight/US Eye, Sarasota, FL, USA.

Journal of cataract and refractive surgery

|January 21, 2026

Abstracto

Purpose:

To evaluate outcomes after implantation of two extended depth of focus IOLs, with emphasis on performance in dim light.

Setting:

Two clinical practices in the USA.

Design:

Prospective, double masked, randomized clinical trial.

Methods:

Subjects were randomized to receive Symfony Optiblue or Vivity IOLs. Objective optical quality, aberrations, and simulated visual disturbances were measured before and 3 months after surgery. Binocular visual acuity (VA), the defocus curve and low contrast VA were measured under mesopic lighting conditions. Patient questionnaires were administered and undirected patient comments were recorded.

Results:

Thirty-one subjects in each group completed the study. Refractive outcomes were not significantly different. The Symfony lens provided about a half line better monocular mesopic VA at distance when uncorrected and best corrected (p < 0.05). There were no differences in binocular visual function between lenses except for the mesopic defocus curve at -1.00 D and -1.50 D, with the Symfony lens providing better VA at those vergences (p < 0.02). Objective optical measures improved after surgery, with improvements not different by group. There were no differences in the size or intensity of simulated glare, but simulated halos and starburst size and intensity were significantly worse with the Symfony lens (p < 0.05). Satisfaction with distance and intermediate vision in both groups was high. Reported visual disturbances were not significantly different between groups.

Conclusions:

The two lenses provided similar visual performance in dim light, with the Symfony lens showing slightly better VA, but with more reports of halos and starbursts.

Palabras clave:

lentes intraoculares profundidad de foco extendida agudeza visual visión con poca luz halos destellos estelares Symfony Vivity

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