Comparison Of Objective And Subjective Visual Outcomes Between A Pentafocal And A Trifocal Diffractive Intraocular Lenses

To compare the clinical and aberrometric outcomes obtained with a new diffractive pentafocal IOL and a diffractive trifocal IOL.

University Hospital/private practice

Patients bilaterally implanted with the new Intensity SL IOL (n=30) and with the POD F IOL (n=30) at cataract surgery were studied after 1 month for refraction, visual acuity, defocus curve, contrast sensitivity, Hartmann-Shack aberration, and double-pass aberration. The Quality of Vision questionnaire (QoV) was used to evaluate the different visual symptoms.

Objective refraction was more myopic than subjective refraction by -1.15 D with the Intensity SL IOL, and by -0.29 D with the POD F IOL. Distance and near visual acuities were similar with the two IOLs, but distance-corrected intermediate visual acuity was better with the Intensity SL IOL (0.03 ± 0.04 LogMAR vs. 0.11 ± 0.04 LogMAR, P<0.01). The defocus curve was flatter with the Intensity SL IOL. Contrast sensitivity was similar in both IOLs. Hartmann-Shack aberration and double-pass aberration were similar, but the MTF cutoff value was worse with the Intensity SL IOL: 11.6 ± 2.7 vs. 15.3 ± 4.9 (P<0.01). QoV scores were better with the Intensity SL IOL in particular for glare, halos, and starburst.

The new pentafocal Intensity SL IOL provided better intermediate vision and better defocus curve than the POD F IOL in this study, with comparable distance and near vision. The optical disturbances as reported by the patients were higher with the POD F IOL. Additional studies will better define the aberration profile obtained with the new IOL.