One-Year Outcomes after implantation of an Extended Depth of Focus Intraocular Lens in Cataract patients.

Purpose: To evaluate the clinical outcomes of a new extended depth of focus (EDF) intraocular lens (IOL) in patients with cataracts.

Setting: ("Masked by journal requirement").

Design: Retrospective observational.

Methods: Data was retrospectively reviewed for a cohort of 51 consecutively operated cataract patients implanted with the ELON (Medicontur) IOL and followed over a 12-month period. The variables collected for analysis included visual acuities (VAs) at various distances (far, intermediate, and near), light distortion index (LDI), defocus curves (DC), and prediction error. Additionally, patient-reported outcomes were gathered to assess spectacle dependence, satisfaction with vision, positive dysphotopsia, difficulties in daily activities, and patients' willingness to undergo the same IOL procedure again.

Results: Monocular data for efficacy was available for 36 patients at the 3-month follow-up and 23 patients at the 12-month follow-up. Median monocular distance-corrected VAs were 0, 0.1, and 0.3 logMAR at 4 m, 66 cm, and 40 cm, respectively, at 3 and 12 months. Correlations between VAs and pupil diameter were found but only at near for binocular uncorrected (rho=0.38, p=0.02) and monocular distance corrected (rho=0.31, p=0.07). The median LDI reduced up to 9% at 12-month. No significant differences were found between follow-up visits for VAs and LDI (p>0.05); however, satisfaction, positive dysphotopsia, and willingness to undergo the same IOL procedure significantly improved from 3 to 12 months (p<0.05).

Conclusions: The ELON IOL extended the depth of field from far to intermediate distances, with some patients with smaller pupil diameters also achieving near vision restoration.