Background: This study aims to evaluate the visual performance, both quantitative and qualitative, of the novel non-diffractive extended monofocal intraocular lens (Evolux, Sifi) following cataract surgery. This serves as a preliminary study to assess its feasibility and improve the research methodology. Methods: We conducted a single-arm, non-randomized, retrospective study at Onioptic Hospital, Craiova, Romania, involving patients who underwent cataract surgery from November 2022 to August 2023. The following visual parameters were evaluated 3 months postoperatively: monocular uncorrected (UDVA) and corrected (CDVA) distance visual acuity at 4 m; uncorrected (UIVA) and distance-corrected (DCIVA) intermediate visual acuity at 60 cm; uncorrected (UNVA) and distance-corrected (DCNVA) near visual acuity at 40cm; postoperative refraction expressed as spheric equivalent (SE) and Quality of Vision (QoV) questionnaire scores. The contrast sensitivity and defocus curve were evaluated 1 month postoperation in 22 patients who underwent surgery in both eyes. SPSS Statistics 26.0 was used for statistical analysis, employing percentages, standard deviations (SDs), and a 95% confidence interval (95% CI). Results: Among the 103 eyes from 81 patients (mean age of 68.7 ± 1.845), 64% achieved an UDVA of logMAR 0.1 or better, and 91.26% achieved a CDVA of logMAR 0.1 or better at 3 months. Additionally, 83.24% of the eyes exhibited a UIVA of logMAR 0.3 or better, and 60.19% attained an UNVA of logMAR 0.3 or better. The SE was within ±0.50 D in 77.76% of the eyes. The QoV mean scores were as follows: frequency = 30.20 ± 16; severity = 17.19 ± 12.45; bothersome = 15.45 ± 12.94. Conclusions: The Evolux IOL demonstrated very good biometric predictability and excellent distance visual performance and very good intermediate vision, with no photopic side effects or glare in our sample population. This study provides a strong foundation for a larger comparative study with an extended depth-of-focus (EDOF) IOL, incorporating contrast sensitivity and defocus curve assessments to enhance the research quality.
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