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Horizontal vs Vertical Scleral Tunnels in Flanged IOL Fixation

NCT07701980 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 107

Last updated 2026-07-14

No results posted yet for this study

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.

Conditions

  • Intraocular Lens Dislocation
  • Aphakia - No Lens Capsule

Interventions

PROCEDURE

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).

Sponsors & Collaborators

  • Yuzuncu Yil University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-03-01
Primary Completion
2025-03-01
Completion
2025-03-01

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07701980 on ClinicalTrials.gov