ClinicalTrials.gg
TerminatedNCT01820520Updated May 30, 2024

Safety and Efficacy of Double Staining With Brilliant Blue G for Macular Surgery

A Phase 3 interventional study of brilliant blue G in Macular Hole and Epiretinal Membrane, sponsored by Asociación para Evitar la Ceguera en México. Terminated at 1 site in Mexico. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2024-05-30.

Sponsored by Asociación para Evitar la Ceguera en México · Phase 3, Interventional, and Treatment

Why this study was terminated
Undefined
Phase
Phase 3
Study type
Interventional
Enrollment
22
Allocation
Not applicable
Ages
18 Years to 90 Years
Sex
All
01

Study summary

Study designed to evaluate the safety and efficacy of double staining with brilliant blue G 0.025% as an adjuvant to macular surgery. Patients undergoing surgery for macular hole or epiretinal membrane will be included. Safety will be evaluated by optic coherence tomography, pattern reversal electroretinogram and multifocal electroretinogram.

02

Conditions studied

  • Macular Hole
  • Epiretinal Membrane
03

In context

Retinal Perforations

139 studies on the registry are indexed under Retinal Perforations; 22 are open to participants now.

This study's enrollment of 22 is below the median of 50 across 94 interventional studies indexed under Retinal Perforations.

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Lead sponsor

Asociación para Evitar la Ceguera en México is the lead sponsor of 60 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient age 18 years of older
  • Signing of
  • Macular pathology requiring vitrectomy (epiretinal membrane, macular hole, vitreomacular traction syndrome)

Exclusion criteria

Exclusion Criteria:

  • Diagnosis of glaucoma
  • Known allergy to brilliant blue G
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
22 participants (actual)

Study arms

  • Experimental
    Double staining with brilliant blue G during vitrectomy

    Drug: brilliant blue G

Interventions

  • Drugbrilliant blue G

    Double staining with brilliant blue G 0.025% for macular surgery

06

What researchers measure

Primary outcomes

  1. Thickness of ganglion cell layer - inner plexiform layer measured by optical coherence tomography

    Average thickness of ganglion cell layer - inner plexiform layer measured by spectral domain optical coherence tomography

    Time frame: 6 months

  2. Amplitude of pattern reversal electroretinogram

    Amplitude of pattern reversal electroretinogram (in microvolts)

    Time frame: 6 months

  3. Amplitude of b-wave of multifocal electroretinogram

    Measurement of the amplitude of the b-wave of multifocal electroretinogram

    Time frame: 6 months

Secondary outcomes

  1. Visual acuity

    Visual acuity measured with an Early Treatment Diabetic Retinopathy Study chart

    Time frame: 6 months

  2. Complications

    Presence of any ocular complication

    Time frame: 6 months

07

Study locations

1 site
  • Asociación para Evitar la Ceguera en México
    Mexico City, DF 04030, Mexico
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2013, a primary completion of Feb 2014 and a completion of Feb 2014. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 26, 2013
First posted
Mar 28, 2013
Start
Jan 2013
Primary completionActual
Feb 2014
CompletionActual
Feb 2014
Last update
May 30, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 30, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01820520
Lead sponsor
Asociación para Evitar la Ceguera en México
Responsible party
Sponsor
First posted
Mar 28, 2013
Start date
Jan 2013
Primary completion
Feb 2014
Completion
Feb 2014
Last update
May 30, 2024

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in May 2024. You cannot join it, but the record below documents what was studied.

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