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Short-term Outcomes of Iridoplasty for Persistent Angle Closure Despite Patent Iridotomies

NCT02199158 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2014-07-24

No results posted yet for this study

Summary

Purpose:

To evaluate short-term angle opening after argon peripheral iridoplasty using AS-OCT and to report its complications at 1-week and 1-month follow up in patients that did not achieve a satisfactory clinical angle opening despite patent laser peripheral iridotomy.

Design:

Prospective, Interventional case series

Subjects:

Patients with an occludable angle in more than two quadrants in dark room indentation gonioscopy and patent iridotomies of at least 2 weeks, with assessment of persistent angle closure aetiology by ultrabiomicroscopy and A-scan ultrasound are included.

Patients will undergo complete examination and AS-OCT before ALPI, one week and one month after it. We analyzed the images in a masked manner and took the angle measurements (AOD500, AOD 750, TISA500, TISA750, ARA500, ARA 750, Lens vault) at 0° and 180° as the main outcome measure to determine effectiveness.

Conditions

Interventions

PROCEDURE

Argon Laser Peripheral Iridoplasty

ALPI was applied with a VISULAS diode laser of 532 nm (Carl Zeiss Meditec, Dublin, CA) by the same ophthalmologist (JML). Twenty to 40 spots of 400 mW power with 500 microns of size and duration of 500 ms were applied. Power was modified arbitrarily until an effective iris contraction was obtained. It was considered an effective contraction as that which causes a concentric movement around the laser spot, with minimal iris pigmentation and immediate angle opening observed through the lens mirrors using a Goldmann lens. Power was lowered if there was any bursting sound perceived, pigment dispersion, air bubbles or considerable pain.

Sponsors & Collaborators

  • Instituto de Oftalmología Fundación Conde de Valenciana

    lead OTHER

Principal Investigators

  • Jorge-Emmanuel Morales-León, MD · "Fundación Conde de Valenciana" Ophthalmology Institute

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
SINGLE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-07-31
Primary Completion
2012-11-30
Completion
2013-01-31

Countries

  • Mexico

Study Locations

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Entities

Diseases

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 NCT02199158 on ClinicalTrials.gov