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Determinants of Subjective Quality of Vision After Phakic Intraocular Lens Implantation

Niklas Mohr, Md Martin Dirisamer, Md Jakob Siedlecki, Md Wolfgang J. Mayer, Benedikt Schworm, Lisa Harrant, Md Siegfried G. Priglinger, Md Nikolaus Luft
Published: 1 May 2022

Abstract: To evaluate postoperative subjective quality of vision in patients who underwent Implantable Collamer Lens (ICL) (STAAR Surgical) implantation for correction of myopia and to identify potential predictive parameters. In this single-center cross-sectional study, a total of 162 eyes of 81 patients (58 women, 23 men) who underwent ICL implantation were analyzed. The Quality of Vision (QOV) questionnaire was used to assess patient-reported outcomes. Baseline characteristics (eg, age), treatment parameters (eg, surgical corrected refraction), and refractive (eg, residual refraction) and visual (eg, uncorrected distance visual acuity) outcomes were analyzed regarding their effect on QOV. Mean age was 33.3 ± 7.0 years (range: 21 to 51 years) and mean preoperative spherical equivalent was −8.42 ± 2.49 diopters (D) (range: −3.25 to −14.38 D). After a mean postoperative follow-up period of 19 ± 14 months (range: 6 to 54 months), the safety index score was 1.23 ± 0.21 and the efficacy index score was 1.17 ± 0.22. The mean QOV scores were 35.5 ± 11.3, 32.2 ± 11.1, and 23.3 ± 16.1 for frequency, severity, and bothersomeness, respectively. The most frequently experienced symptoms were halos (90.1%) and glare (66.7%). Halos appeared in 66.7% of the patients “occasionally” and 5 of them (6.2%) experienced them “very often.” Only 1 patient (1.2%) classified halos as “very bothersome.” Patients older than 36 years reported visual symptoms more frequently (P < .05) and showed higher bothersomeness scores (P = .01). Halos are the most commonly perceived long-term visual disturbance after myopic ICL implantation with a central hole. Visual symptoms can persist more than 6 months postoperatively, causing only minor disturbances in most cases. Older patients seem more prone to experiencing these symptoms. [J Refract Surg. 2022;38(5):280–287.]
Keywords: ICL implantation / halos / bothersomeness / postoperative / efficacy / safety / treatment

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