J Korean Ophthalmol Soc.  2023 Feb;64(2):108-113. 10.3341/jkos.2023.64.2.108.

Analysis of Refractive Error after Cataract Surgery According to the Haptic Shape of Intraocular Lens

• Choi Y
• Han H
• Choi S

• KMID: 2539914
• DOI: http://doi.org/10.3341/jkos.2023.64.2.108

Abstract

Purpose
To analyze and compare changes in refractive error according to different haptic intraocular lenses after cataract surgery.
Methods
We retrospectively reviewed the medical records of 508 eyes of 254 patients who underwent cataract surgery in both eyes, with the MBI^® SAL302AC (C loop haptic intraocular lens [IOL]) used in one eye and the Zeiss^® CT ASPHINA509M (plate haptic IOL) in the other. Using the Barrett Universal II formula, prediction errors were calculated at 1 week, 2 weeks, 1 month, 2 months, and 6 months after surgery. Result: In the C loop group, prediction error was -0.26 ± 0.42 diopter (D) and -0.17 ± 0.45 D at weeks 1 and 2 postoperatively, respectively. Hyperopic shift, which reduced myopia, progressed until 2 weeks postoperatively (p < 0.001), after which there was no significant further shift. In the plate group, prediction error was -0.37 ± 0.45 D at 1 week postoperatively, -0.25 ± 0.44 D at 2 weeks postoperatively, -0.11 ± 0.44 D at 1 month postoperatively, and -0.04 ± 0.44 D at 2 months postoperatively. Hyperopic shift progressed at 2 weeks (p < 0.001), 1 month (p < 0.001), and 2 months (p = 0.02), after which there was no significant further shift. There were no significant differences in the mean or median absolute error at 2 months postoperatively.
Conclusions
In both the C loop and plate groups, refraction was myopic at 1 week postoperatively, and then the C loop group progressed to hyperopic shift until 2 weeks postoperatively, and the plate group progressed to hyperopic shift until 2 months postoperatively. At 2 months postoperatively, prediction error of the plate group showed a hyperopic tendency compared to the C loop group, but there was no difference in accuracy based on the absolute error using the Barrett Universal II formula.

Keyword

Cataract surgery; Intraocular lens; Refractive errors