Long-Term Effectiveness of a Monofocal Intraocular Lens (IOL) Enhanced for Intermediate Vision: A 5-Year Follow-Up Study

Background/Objectives: The Tecnis Eyhance is an enhanced monofocal intraocular lens (IOL) designed to improve intermediate vision without compromising distance clarity or increasing the incidence of photic phenomena. Although short-term results have been encouraging, long-term data remain limited. This study presents the 5-year follow-up of a previously published 6-month clinical evaluation, aiming to assess the stability of visual, optical, and patient-reported outcomes over time. Methods: A single-center retrospective study of 18 patients (36 eyes) undergoing bilateral Tecnis Eyhance IOL implantation was conducted. The same cohort from the original 6-month study was re-evaluated after a mean follow-up of 5 years. Visual acuity (distance, intermediate, near), defocus curves, contrast sensitivity, optical quality, effective lens position (ELP), halo size, and patient-reported measures were assessed. Results: Visual acuity remained stable across all distances, with binocular uncorrected intermediate visual acuity (UIVA) ≤ 0.2 logMAR in all patients. No significant changes were observed in optical quality parameters or contrast sensitivity. ELP remained consistent over time (p = 0.298), and posterior capsule opacification (PCO) requiring Nd:YAG capsulotomy developed in 5% of the eyes. Halo size was mild, and subjective glare perception did not increase. Spectacle independence remained high for distance (100%) and intermediate (more than 75%) tasks. Conclusions: This 5-year follow-up study confirms the long-term stability and effectiveness of the Tecnis Eyhance IOL. These findings support its long-term use as a stable monofocal IOL with enhanced intermediate function.