JOURNAL ARTICLE
MULTICENTER STUDY
OBSERVATIONAL STUDY
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Visual Performance at Different Distances After Implantation of an Isofocal Optic Design Intraocular Lens.

PURPOSE: To evaluate refractive and visual outcomes at different distances after implantation of an isofocal optic design intraocular lens (IOL) following cataract surgery.

METHODS: This multicentric, retrospective/prospective, open-label, observational study considered 183 eyes of 109 patients who were implanted with the ISOPURE 123 (PhysIOL) IOL. The main outcome measures were refractive error and monocular and binocular uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected intermediate visual acuity (UIVA), and distance-corrected intermediate visual acuity (DCIVA) at 66 and 80 cm, uncorrected near visual acuity (UNVA), and distance-corrected near visual acuity (DCNVA) at 40 cm. Binocular visual acuity at different vergences (defocus curve) was also measured. Patients were evaluated at least 120 days postoperatively.

RESULTS: A total of 95.7% of the eyes were within ±1.00 diopter (D) and 73.2% of the eyes were within ±0.50 D; the mean postoperative spherical equivalent was -0.12 ± 0.42 D. There were 90.54% and 98.57% of patients presenting a cumulative binocular UDVA and CDVA value of 20/25 or better, respectively; 80.65% and 50.0% of patients presented a binocular DCIVA value of 20/25 or better at 80 and 66 cm, respectively; and 41.94% of patients presented a binocular DCNVA value of 20/40 or better. The through-focus curve showed good visual acuity at far and intermediate distances with a depth of focus value of 1.50 D. No adverse events were reported.

CONCLUSIONS: The current study shows that this isofocal optic design IOL provides excellent visual performance for far vision and functional intermediate vision with an extended range of vision. This lens is an effective option for providing functional intermediate vision and correcting aphakia. [ J Refract Surg . 2023;39(3):150-157.] .

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