Clinical Outcomes with a New Model of Extended Depth of Focus Intraocular Lens

Abstract

Purpose: To evaluate the early clinical outcomes of a new diffractive extended depth-of-focus (EDOF) intraocular lens (IOL). Methods: Prospective case series enrolling patients undergoing cataract surgery with implantation of the EDOF IOL AT LARA (Carl Zeiss Meditec, Jena, Germany). Distance, intermediate and near visual acuity were evaluated during a follow-up of 1 month. Likewise, defocus curve, binocular mesopic contrast sensitivity, perception of photic phenomena, patient satisfaction and spectacle independence were assessed. Results: The study enrolled 38 eyes of 19 patients with a mean age of 69.5 years. A significant reduction of manifest refraction and improvement in corrected distance visual acuity (CDVA) was observed with surgery (p < 0.001). All eyes achieved a 1-month postoperative binocular CDVA of 20/20 or better. Likewise, all eyes achieved a DCIVA of 20/30 or better at 1 month postoperatively, and a total of 92.1% achieved DCNVA of 20/40 or better. Concerning refractive predictability, 97.4% of eyes had a 1-month postoperative spherical equivalent within ±0.50 D. The level of patient satisfaction with distance, intermediate and near vision was high, with 95% of patients reporting that they would have the same surgical procedure with the same IOL again. Difficulties in night driving or associated to halos were low. A total of 89% of patients reported to be spectacle independent postoperatively. Conclusions: The EDOF IOL AT LARA is able to provide a functional restoration of the visual function across distances after cataract surgery, with very high levels of patient satisfaction and minimal incidence of photic phenomena.

Visual performance and patient preference with bilateral implantation of an extended depth of focus or combined implantation of an extended depth of focus/trifocal intraocular lens

“…To mitigate these visual disturbances coupled with the ever-increasing demand for better intermediate vision, extended-depth-of-focus (EDOF) IOLs have been introduced. EDOF lens technology provides continuous range of focus [ 1 , 9 – 14 ], leading to fewer unwanted visual disturbances (i.e., photic phenomena, glare, halos) without sacrificing other visual outcomes [ 10 , 11 , 15 ]. Numerous studies to date have shown EDOF IOLs produce similar results in both uncorrected far and intermediate vision as trifocal IOLs [ 1 , 5 , 11 , 13 , 14 ].…”