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Near to Infrared (NIR) Light Neuroprotection in Glaucomatous Optic Neuropathy

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified September 2009 by Universidad de Valparaiso.
Recruitment status was:  Active, not recruiting
Comisión Nacional de Investigación Científica y Tecnológica
Information provided by:
Universidad de Valparaiso Identifier:
First received: February 13, 2009
Last updated: September 30, 2009
Last verified: September 2009
The purpose of the study is to evaluate if near-to-infrared light stimulation can improve retinal ganglion cell function in glaucomatous patients.

Condition Intervention Phase
Open Angle Glaucoma
Device: Near to infrared light retinal stimulation
Device: Green light stimulation
Early Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Near to Infrared Light Stimulation Effect on Ganglion Cell Function in Glaucomatous Optic Neuropathy

Resource links provided by NLM:

Further study details as provided by Universidad de Valparaiso:

Primary Outcome Measures:
  • Pattern electroretinogram response [ Time Frame: Every two weeks for 4 months ]

Secondary Outcome Measures:
  • OCT ganglion cell layer average thickness, Visual Field defects [ Time Frame: Every month for four months ]

Estimated Enrollment: 40
Study Start Date: April 2009
Estimated Study Completion Date: March 2010
Estimated Primary Completion Date: December 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: NIR light
Group of patients stimulated with near to infrared light daily stimulation
Device: Near to infrared light retinal stimulation
Patients will be stimulated with 660 nm light frequency through a LED device. Patients will be stimulated daily for two minutes for a 6 month period.
Placebo Comparator: Green light
Group of patients stimulated with green light.
Device: Green light stimulation
Patients will be stimulated with 530 nm LED light frequency through a LED device. Patients will be stimulated daily for two minutes for a 6 month period.

Detailed Description:

Ganglion cell dysfunction in glaucomatous optic neuropathy has been ascribed to ganglion cell electrophysiological inactivation and to apoptotic cell death. Near-to-infrared light stimulation has been used to induce mitochondrial activation and to prevent apoptotic death through mitochondrial cytochrome oxidase c stimulation. Near-to-infrared light stimulation might be useful to induce ganglion cell activation and inhibit apoptotic cell death.

We propose that near-to-infrared light stimulation can be used as an adjuvant treatment combined with ocular hypotensive treatment in glaucomatous patients.


Ages Eligible for Study:   40 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Clinical diagnose of Ocular Hypertension (cup to disk ratio 0,6 or less, normal Humphrey 24-2 visual field with aplanatic IOP over 21 mmHg) or Mild Glaucoma (cup to disk ratio 0,6 to 0,8, characteristic Humphrey 24-2 visual field defect PSD between 3 and 6 dB).
  • Visual acuity 20/40 or better

Exclusion Criteria:

  • Diabetic retinopathy, Multiple Sclerosis, Parkinson disease
  • Refractive error of 3 diopters or more
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Please refer to this study by its identifier: NCT00844389

Servicio de Oftalmología Hospital Van Buren
Valparaiso, Chile
Sponsors and Collaborators
Universidad de Valparaiso
Comisión Nacional de Investigación Científica y Tecnológica
Principal Investigator: Tatiana E Cevo, M.D Universidad de Valparaiso
Study Director: Adrian Palacios, PhD Universidad de Valparaiso
  More Information

Responsible Party: Tatiana Cevo, Universidad de Valparaíso Identifier: NCT00844389     History of Changes
Other Study ID Numbers: ACT45-GLAUC
Study First Received: February 13, 2009
Last Updated: September 30, 2009

Keywords provided by Universidad de Valparaiso:
Open Angle Glaucoma
Near to Infrared light stimulation

Additional relevant MeSH terms:
Glaucoma, Open-Angle
Optic Nerve Diseases
Ocular Hypertension
Eye Diseases
Cranial Nerve Diseases
Nervous System Diseases processed this record on April 25, 2017