Visual Outcomes Three and Six Months After Bilateral Implantation of Extended Monofocal Isopure 1.2.3 Lenses

Objectives: The objective of this study was to compare visual outcomes three and six months after bilateral implantation of extended monofocal Isopure 1.2.3 lenses. Methods: Prospective study: 20 patients (40 eyes) aged 51-75 years underwent uncomplicated bilateral cataract surgery with the implantation of Isopure 1.2.3 lenses. Three and six months after surgery, the following examinations were performed: monocular and binocular UDVA, UIVA, UNVA, contrast sensitivity, patient satisfaction, spectacle independence, incidence of photic phenomena, and defocus curve (only 6-month assessment). Results: Three months after surgery, the means of monocular and binocular UDVA were 0.06 ± 0.08 logMAR and 0.02 ± 0.07 logMAR, respectively. The mean binocular UIVA values were 0.15 ± 0.12 logMAR (66 cm) and 0.19 ± 0.11 logMAR (80 cm), and those for UNVA 0.32 ± 0.12 logMAR (40 cm). Binocular contrast sensitivity was within the normal range. Defocus curve indicated prolonged depth of focus for intermediate vision. High level of patient satisfaction, low frequency and intensity of photic phenomena, and significant independence from glasses were achieved. Six months postoperatively, the visual outcomes and patient satisfaction did not differ significantly from the three-month follow-up. Conclusions: Bilateral implantation of Isopure 1.2.3 IOLs provides very good distance, good intermediate and acceptable near vision. With low incidence and perception level of photic phenomena, as well as significant spectacle independence, it should be considered an option for patients not suitable for multifocal IOLs. The investigated visual outcomes are stable starting from the third postoperative month, which could be the result of good neuroadaptation in a short period of time.