Clinical Outcomes Based on the Corneal Limbus–Scleral Tunnel Distance in Flanged Intrascleral Intraocular Lens Fixation
10.3341/jkos.2026.67.4.103
- Author:
Dong Hyeon KIM
1
;
Yu Min KIM
;
Seong Yong JEONG
;
Yong Koo KANG
;
Dong Ho PARK
;
Jae Rock DO
Author Information
1. Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
- Publication Type:Original Article
- From:Journal of the Korean Ophthalmological Society
2026;67(4):103-109
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Purpose:To compare the anatomical and clinical outcomes based on the distance from the corneal limbus to the scleral tunnel in flanged intrascleral intraocular lens (IOL) fixation.
Methods:We retrospectively analyzed the medical records of patients who underwent scleral fixation of flanged IOLs. Group 1 (54 eyes) had a distance of 2.1 mm from the corneal limbus to the scleral tunnel, and Group 2 (48 eyes) had a distance of 2.8 mm. We evaluated the best corrected visual acuity (BCVA), postoperative complications, IOL tilt and decentration, refractive prediction error (RPE), effective lens position, and iris-IOL distance.
Results:The BCVA, postoperative complications, IOL tilt, and IOL decentration did not differ between the two groups (p > 0.05). The RPE showed a hyperopic shift in Group 1 and a myopic shift in Group 2 (Group 1: +0.24 ± 0.68 D, Group 2: -0.03 ± 0.43 D, p = 0.03). The iris-IOL distance was statistically longer in Group 1 compared to Group 2 (Group 1: 1.02 ± 0.40 mm, Group 2: 0.57 ± 0.32 mm, p = 0.02). The incidence of pupillary optic capture was significantly higher in Group 2 compared to Group 1 (Group 1; 0%, Group 2; 8.3%, p = 0.03).
Conclusions:It should be considered that a shorter distance from the corneal limbus to the scleral tunnel results in a postoperative hyperopic shift and reduces the incidence of pupillary optic capture when performing flanged intrascleral IOLs fixation.
