Comparative analysis of the clinical results of implantation of monofocal IOLs and EDOF IOLs in patients with a history of refractive surgery

Materials and methods: the final study protocol included data from 101 patients (133 eyes). After phacoemulsification, various IOL models were implanted. Patients were divided into 2 groups: Group 1 - patients with implanted monofocal IOLs, Group 2 - with implanted EDOF IOLs. The work included a comparative analysis of uncorrected and corrected distance visual acuity (UCVA and CDVA), refraction data before phacoemulsification and 1 month after cataract surgery. In patients of Group 2, UCVA and CDVA at near (30 cm) and intermediate (45 cm) distances were also assessed in the postoperative period.

Results: 1 month after surgery: in group 1, the uncorrected visual acuity at a distance after surgery increased to 0.60 (0.40; 0.90), and the visual acuity was 0.80 (0.60; 1.00), in group 2, the uncorrected visual acuity after surgery was 0.60 (0.50; 0.90), and the visual acuity was 0.80 (0.70; 1.00). At a near distance (30 cm), the uncorrected visual acuity and visual acuity in patients in group 2 were 0.54 ± 0.18 and 0.50 ± 0.17, respectively. At an average distance (45 cm) - 0.42 ± 0.17 and 0.50 ± 0.17 (45 cm), respectively.

Conclusions: EDOF IOL implantation provides high refractive results at a distance, comparable to the results of monofocal IOL implantation in patients with a history of keratorefractive surgeries. EDOF IOLs provide acceptable visual acuity at near and intermediate distances. At the same time, near uncorrected visual acuity at 30 cm has higher values ​​than at 45 cm, due to the summation of the pseudoaccommodative effect of the EDOF IOL and the optically altered cornea.