Extended depth of focus IOL in eyes with different axial myopia and targeted refraction

Abstract

Aim: To evaluate the objective visual outcomes following implantation of extended depth of focus intraocular lens (EDOF IOL) in individuals with varying axial lengths (AL) and targeted refraction. Methods: This retrospective study comprised age-matched eyes that underwent implantation of the EDOF IOL. Eyes were categorized based on AL into groups: control group with AL < 26 mm; high myopia group with AL ≥ 26 mm. Each group was then subdivided based on postoperative spherical equivalent (SE). Follow-up at three months included assessment of uncorrected visual acuity at different distances, contrast sensitivity (CS), refractive outcomes, and spectacle independence. Results: Overall, this study included 100 eyes from 100 patients, comprising 50 males (50.00%) and 50 females (50.00%), with 20 eyes in each group. In the control group, the uncorrected distance visual acuity (UDVA) at 5 and 3 m (m) in the − 1.50 to -0.75 group was inferior to that of the − 0.75 to 0.00 group (P = 0.004). Conversely, the uncorrected near visual acuity (UNVA) at 33 cm in the − 1.50 to -0.75 group was superior to that of the − 0.75 to 0.00 group (P = 0.005). Within the high myopia group, the UDVA at 5 and 3 m in the − 2.25 to -1.50 group was worse than in the − 0.75 to 0.00 group (P = 0.009 and 0.008, respectively). However, the UNVA at 33 cm in the − 2.25 to -1.50 group was better than in the − 0.75 to 0.00 group (P = 0.020). No significant differences were observed among the groups for corrected distance visual acuity (CDVA) (P > 0.05). Additionally, in the high myopia group, the CS of the − 2.25 to -1.50 group was lower compared to that of the − 0.75 to 0.00 group (P = 0.017). Among high myopia patients, 90.00% with refraction ranging from − 1.50 to -0.75 reported achieving overall spectacle independence. Conclusions: Implantation of extended depth of focus intraocular lenses (IOLs) yields satisfactory visual and refractive outcomes in eyes with axial myopia. Among high myopia patients, a refraction ranging from − 1.50 to -0.75 diopters achieves superior visual quality compared to other postoperative myopic diopters.