Unlocking Trifocal Vision: Functional Outcomes With A Complementary Diffractive Trifocal Intraocular Lens System

Assessing clinical outcomes of a trifocal diffractive binocular intraocular lens system (Artis Symbiose, Cristalens Industrie, France) with extended depth of focus for intermediate vision (ARTIS Symbiose MID) and near vision (ARTIS Symbiose PLUS).

International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University Hospital Heidelberg, Germany

The preliminary findings from this ongoing clinical evaluation encompass 36 patients who underwent phacoemulsification for cataract, receiving implantation of the multifocal intraocular lens (MIOL) Artis Symbiose from Cristalens Industrie, France. One-month, 6 months and 12 months post-surgery, subjective refraction, corrected and uncorrected visual acuity, monocular and binocular [logMAR] measures for distance, intermediate, and near vision, alongside binocular and monocular best-corrected defocus curve analyses at 1 month, were meticulously assessed.

So far, 36 patients with a mean age of 72 years have been enrolled in the study. 1 months postoperatively binocular UDVA and CDVA were 0.06 ± 0.08 and -0.04 ± 0.09 logMAR. UIVA and DCIVA were 0.02 ± 0.09 and 0.04 ± 0.08 logMAR, UNVA and DCNVA were 0.14 ± 0.09 and 0.08 ± 0.07 logMAR. Additionally, the binocular distance-corrected defocus curve at the one-month mark revealed a consistent visual acuity of 0.15 logMAR or better within the defocus range of +1.0 to -2.5 diopters. Further detailed evaluations and defocus curve assessments are ongoing.

The initial results indicate good visual acuity at far, intermediate, and near distances, as well as throughout a wide range of defocus. Continued evaluation of visual acuity and defocus curve outcomes at 6 and 12 months postoperatively are ongoing.