Target Refraction And Postoperative Shift In Cataract Surgery
Published 2023 - 41st Congress of the ESCRS
Reference: PP13.16 | Type: Free paper | DOI: 10.82333/hsyk-2v56
Authors: Freja Bagatin* 1 , Renata Ivekovic 1 , Karla Randelovic 1 , Ivana Radman 1 , Valentina Lacmanovic Loncar 1 , Ivanka Petric Vickovic 1 , Zoran Vatavuk 1
1Ophthalmology,KBC Sestre milosrdnice,Zagreb,Croatia
Purpose
A post-operative manifest refractive error as close as possible to target is key when performing cataract surgery with intraocular lens (IOL) implantation, given that residual astigmatism and refractive errors negatively impact patients’ vision and satisfaction. Aim is to compare preoperative target refraction with postoperative intraocular lens (IOL) shift and postoperative refraction using three types of monofocal IOLs.
Setting
This single-center study was conducted at Clinical Hospital Centre "Sestre milosrdnice" in Zagreb, Croatia. Operations were performed between October 2022 and February 2023. All research procedures were performed in accordance with the Declaration of Helsinki. Informed consent was obtained from all participants.
Methods
The study included patients who underwent routine phacoemulsification with clear corneal incisions and implantation of a foldable monofocal IOL. We preoperatively measured biometry, anterior chamber depth (ACD), axial length (AL), central corneal thickness (CCT) white-to- white (WTW) and pupil size. Target postoperative refractive error was in the range of -0.75 D - 0.0 D. At 1 week and 1 month postoperatively, we checked IOL position and refraction and compared the IOL shift and refraction change in three IOL groups. Also the patients satisfaction with vision was assessed.
Results
Of 90 patients, 90 eyes were investigated. Data on patient demographics, type of surgery, IOL power, type, biometry, postoperative refraction outcomes, pre- and postoperative visual acuity were analyzed. Descriptive analysis and Chi-square test were carried out to determine the mean, median, standard deviation and relevant associations. Mean age was 63.7 ± 12.1 years. 79-94% of patients achieved postoperative refractions within 0.5 D and 1.0 D of the intended target. Myopia and compound myopic astigmatism were the dominant refractive error outcomes.
Conclusions
For routine unilateral cataract surgery with implantation of monofocal IOLs, target refractive error to achieve emmetropia was in the range of -0,75 D to - 0,50 D.