MedTrace Logo

ETDRS PRP With IVR Versus Retinal Photocoagulation Targeted to Ischemic Retina With IVR for the Treatment of PDR

NCT03904056 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 23

Last updated 2019-04-04

No results posted yet for this study

Summary

Purpose: To compare panretinal photocoagulation (PRP) as described in ETDRS Study combined with intravitreal injection of ranibizumab (IVR) (ETDRS-PRP group) and retinal photocoagulation targeted to ischemic retina combined with IVR (ISQ-RP group) in patients with proliferative diabetic retinopathy (PDR).

Design: Randomized prospective clinical trial. Methods: Patients with PDR were assigned to receive either PRP plus IVR (20 eyes) or retinal photocoagulation targeted to ischemic areas plus IVR (20 eyes). ETDRS best-corrected visual acuity (BCVA), central subfield macular thickness (CSFT) measured by optical coherence tomography (OCT) were performed at baseline and every 4 weeks through week 48. Area of fluorescein leakage from active new vessels (FLA) was measured every 12 weeks. Full-field electroretinography (ERG) was recorded at baseline and after 3 months.

Conditions

Interventions

PROCEDURE

ISQ-RP

Patients were treated with single-spot targeted retinal photocoagulation directed toward areas of retinal nonperfusion detected by fluorescein angiography. In this group, laser treatment was performed in two sessions (week 0 and 2), with a shot duration of 100 ms, but spots were placed 1/2 burn apart and power modulated in order to generate moderately white spots on the retina. Retinal photocoagulation was performed with single-spot full-scatter PRP using Purepoint green diode laser (Alcon, Fortworth, Texas) with an Ocular Mainster PRP 165 lens with a dynamic field of view of 180 degrees, and a 200 micron spot size (which produces a 392 micron spot size on the retina). Intravitreal injection of 0.5 mg (0.05 ml) ranibizumab (Lucentis®) (IVR) were performed 180 minutes after the first laser session (week 0) by a single retina specialist.

PROCEDURE

ETDRS-PRP group

Panretinal photocoagulation (PRP) as described in ETDRS Study combined with intravitreal injection of ranibizumab

Sponsors & Collaborators

  • São Paulo State University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-01-01
Primary Completion
2017-07-01
Completion
2017-07-01

More Related Trials

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 NCT03904056 on ClinicalTrials.gov