Clinical evaluation of intermediate visual acuity with Clareon® monofocal intraocular lenses

Purpose To examine the intermediate visual acuity (VA) of the Clareon® (Alcon) monofocal intraocular lens (IOLs). Methods Thirty patients underwent cataract surgery. All patients had Clareon® or Clareon® Toric IOLs inserted for binocular correct VA. Uncorrected and corrected VA were measured at 3 months postoperatively at 5 m (distance) and 80 and 66 cm (intermediate distances). Starting at a spherical power of + 1.50 D and using the refraction at which the best corrected distance VA was obtained as the zero base point, binocular open eye visual acuity was measured at each additional power and a Clareon® depth of focus. Results The binocular uncorrected VA (logMAR) were − 0.11 ± 0.06 (5 m), 0.12 ± 0.09 (80 cm), 0.18 ± 0.11 (66 cm), and the binocular distance-corrected VA (logMAR) were − 0.14 ± 0.05 (5 m), 0.11 ± 0.11 (80 cm), 0.15 ± 0.11 (66 cm). The percentage of uncorrected VA exceeding 20/20 at 5 m was 100% for bilateral VA and 90% for monocular VA, indicating good distance vision. At 66 cm, the percentage exceeding 20/32 was 82% for bilateral VA and 57% for monocular VA. The objective refraction showed that 47.1% of patients were within ± 0.25 D, 75.0% within ± 0.5 D, 88.2% within ± 0.75 D, and 97.1% within ± 1 D. For subjective refraction, 50.0% were within ± 0.25 D, 76.5% within ± 0.5 D, 91.2% within ± 0.75 D, and 100.0% within ± 1 D. Conclusion Clareon® IOLs provide effective distance VA and practical intermediate VA in Japanese patients. Notably, no adverse events were reported, underscoring the safety and efficacy of these IOLs in cataract surgery.