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Horizontal vs Vertical Scleral Tunnels in Flanged IOL Fixation
Sponsor: Yuzuncu Yil University
Summary
This study compares the 2-year outcomes of horizontal versus vertical scleral tunnel orientation in flanged intrascleral intraocular lens (IOL) fixation surgery. The primary outcome is the proportion of eyes achieving refraction within ±0.50 diopters of the target at 2 years. Secondary outcomes include IOL tilt measured by anterior segment optical coherence tomography (AS-OCT), iris capture, conjunctival erosion, and other complications. The study aims to determine whether tunnel orientation is associated with differing outcomes in this surgical technique.
Official title: Horizontal Versus Vertical Scleral Tunnel Orientation in Flanged Intrascleral Fixation: A 2-Year Comparative Study
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
OBSERVATIONAL
Enrollment
107
Start Date
2022-03-01
Completion Date
2025-03-01
Last Updated
2026-07-14
Healthy Volunteers
No
Interventions
Flanged Intrascleral IOL Fixation (Yamane Technique)
Sutureless flanged intrascleral fixation of a three-piece foldable acrylic IOL (Alcon AcrySof MA60AC). Two partial-thickness scleral tunnels are created 2.0 mm posterior to the limbus, 180° apart. Haptics are externalized through the tunnels, and a flange is created on each haptic tip using thermal cautery. Tunnel orientation varied intentionally: horizontal (parallel to limbus) or vertical (perpendicular to limbus).
Locations (1)
SBU Van Training and Research Hospital
Van, Turkey (Türkiye)