PURPOSE

This study compares the functional outcomes of correction using two different types of aberrational extended depth-of-focus (EDOF) intraocular lenses (IOLs).

MATERIAL AND METHODS

The study was conducted in two standardized groups (20 patients, 20 eyes in each group). Patients in group 1 were implanted EDOF IOL I, in group 2 — EDOF IOL II. The main selection criterion was stable postoperative refraction close to emmetropia, with a minimum follow-up period of 3 months. Uncorrected visual acuity (UCVA) was chosen as the primary assessment criterion and was evaluated monocularly under photopic conditions at the following distances: at far, 66 cm, 50 cm, 40 cm, and 33 cm.

RESULTS

The conducted analysis showed that both lenses provided a comparable high level of UCVA for distance vision in groups 1 and 2, with statistically insignificant differences (p=0.2538; U=160.52). Significantly better results at intermediate distances and at 50 cm were achieved in group 1 (p=0.0235; U=118.02 and p=0.0124; U=109.0, respectively). For the near distance of 40 cm, group 1 also demonstrated better outcomes, although the difference was not statistically significant (p=0.0720; U=134.52). At the near distance of 33 cm, both groups achieved an expectedly similar level of UCVA, with no statistically significant difference (p=0.4656; U=173.52). No positive dysphotopsia was reported in either group.

CONCLUSION

Both EDOF IOLs demonstrated high clinical effectiveness. A significantly higher level of functional outcomes at intermediate distances was achieved with IOL I.