Comparison of visual acuity and optical quality between higher-order aspheric monofocal and standard introcular lenses.

AIM: To compare the 12-month outcomes of visual performance and patient satisfaction of a higher-order aspheric monofocal intraocular lens (IOL) and a conventional monofocal IOL.

METHODS

Prospective, randomized, comparative, double-blinded study including 22 patients who underwent bilateral cataract surgery with implantation of the Tecnis Eyhance ICB00 IOL in one eye (ICB00 group) and the Tecnis ZCB00 IOL in the fellow eye (ZCB00 group). Uncorrected distance (UDVA), corrected distance (CDVA), uncorrected intermediate (UIVA), distance-corrected intermediate (DCIVA), uncorrected near (UNVA), and distance-corrected near visual acuities (DCNVA) were evaluated during a 12-month follow-up. Contrast sensitivity, defocus curves, and reading text size were also evaluated. Patient satisfaction was assessed with a questionnaire at the 6-month postoperative visit.

RESULTS

Mean postoperative logMAR UDVA was 0.01±0.12 and -0.02±0.10 in ICB00 and ZCB00 groups, respectively (P=0.37). Mean logMAR UIVA was 0.32±0.19 and 0.45±0.16 in ICB00 and ZCB00 groups, respectively (P=0.010). Differences between groups in UNVA did not reach statistical significance (P=0.16). The intermediate reading acuity at 66 cm (P=0.02) and 80 cm (P=0.04) was significantly better in the ICB00 group. Postoperative contrast sensitivity results did not differ significantly between groups (P>0.05). Patients reported high overall satisfaction, with 62% of patients using spectacles for reading in everyday life.

CONCLUSION

The eyes of patients implanted with the enhanced monofocal IOL evaluated have significantly better visual acuity for intermediate distances with the same contrast sensitivity as a conventional monofocal IOL.