Comparison Of Target And Postoperative Spherical Equivalent In Combined Vitrectomy With Sutured Scleral Intraocular Lens Fixation Versus Sutureless Intrascleral Haptic Fixation
Published 2023 - 41st Congress of the ESCRS
Reference: PO0376 | DOI: 10.82333/2gd1-1169
Authors: Jae Bong Cha* 1 , Jung Kee Min 1
1Department of Ophthalmology,Ulsan University Hospital, University of Ulsan College of Medicine,Ulsan,Korea, Republic Of
This study aimed to compare the differences between the target and postoperative spherical equivalent (SE) in patients who underwent sutured scleral intraocular lens (IOL) fixation and sutureless intrascleral haptic fixation (the Yamane technique).
We retrospectively analyzed the medical records of patients who underwent both types of scleral IOL fixation technique. The study included 24 eyes in the sutured scleral fixation group and 41 eyes in the sutureless intrascleral haptic fixation group. All surgeries were performed by a single surgeon using a single type of 3-piece IOL.
The lens material and capsule residues were removed using a vitreous cutter under the scleral indentation, and the vitreous was adequately removed. The SE difference (postoperative SE - target SE) was calculated to determine the difference between the target and postoperative SE, which was measured using an automatic refractive keratometer at 2 months after surgery.
In the sutured scleral fixation group, the target SE was -0.570 ± 1.086 diopters (D), the postoperative SE was -1.000 ± 1.066 D, and the SE difference was -0.430 ± 0.685 D. In the sutureless intrascleral haptic fixation group, the target SE was -0.590 ± 0.756 diopters (D), the postoperative SE was -0.342 ± 1.026 D, and the SE difference was 0.248 ± 0.715 D. The SE difference between the two types of scleral IOL fixation methods was statistically significant (p < 0.001).
Sutured scleral fixation of IOL tended to cause myopic shifts up to 0.430 D compared to the target SE, while intrascleral haptic fixation tended to cause hyperopic shifts up to 0.248 D. The differences in SE after surgery are thought to be due to variations in the fixed position of the IOL within the eye. Therefore, verifying these characteristics before surgery and determining the IOL power based on them could aid in achieving accurate IOL power calculation.