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Normal Tension and Chronic Open Angle Glaucoma and Cerebrospinal Fluid Composition

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00306657
Recruitment Status : Unknown
Verified April 2007 by Kantonsspital Aarau.
Recruitment status was:  Recruiting
First Posted : March 24, 2006
Last Update Posted : June 27, 2011
Information provided by:
Kantonsspital Aarau

Brief Summary:
Normal tension glaucoma (NTG) and chronic open angle glaucoma (COAG) occurring progressively with optimal conventional or intraocular pressure reducing surgery are still unsolved problems in ophthalmology. The investigators would like to investigate whether or not the composition of cerebrospinal fluid (CSF) surrounding the optic nerve (ON) in these patients is pathologic under certain conditions. They therefore compare the CSF taken during optic nerve sheath fenestration with the CSF taken during a lumbar puncture. The investigators' hypothesis is that, in patients with NTG and COAG, the composition of CSF surrounding the affected ON plays an important role in promoting progressive visual function loss.

Condition or disease Intervention/treatment Phase
Glaucoma Open-Angle Procedure: Optic nerve sheath fenestration Not Applicable

Detailed Description:
We will recruit 30 patients with progressive visual function loss, due to Normal tension glaucoma (NTG) or chronic open angle glaucoma (COAG), despite optimal conventional or intraocular pressure reducing surgery treatment so far. We will proceed with an optic nerve sheath fenestration (ONSF) (according to the studies in the literature, e.g. Wax MB, Barrett DA, Hart WM Jr, Custer PL. Optic nerve sheath decompression for glaucomatous optic neuropathy with normal intraocular pressure. Arch Ophthalmol. 1993;111(9):1219-28.) and compare the cerebrospinal fluid (CSF) taken from the subarachnoid space (SAS) of the optic nerve (ON) with the CSF taken during a lumbar puncture, on the same day. Concentrations of neurobioactive substances will especially be studied. Visual acuity and visual field development before and after ONSF will be studied. Quality of life assessment will be done before and several times after ONSF.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 30 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Normal Tension and Chronic Open Angle Glaucoma, Cerebrospinal Fluid Composition in Subarachnoid Space of Affected Optic Nerves
Study Start Date : March 2006
Estimated Study Completion Date : December 2012

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Glaucoma

Primary Outcome Measures :
  1. Visual acuity
  2. Visual field
  3. Quality of life assessment
  4. Laboratory markers work-up

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Documented progressive visual function loss over 2 years (visual field or visual acuity)
  • Intraocular pressure measured as a maximum of 25 mmHg
  • Possibility of receiving general anaesthesia and optic nerve sheath fenestration.

Exclusion Criteria:

  • Secondary glaucoma
  • Oral medication to lower intraocular pressure (carboanhydrase inhibitor)
  • Visual acuity worse than 20/400
  • Any other type of glaucoma (pseudoexfoliation, narrow or closed angle).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00306657

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Contact: Hanspeter E Killer, MD, Prof +41628385021
Contact: Gregor P Jaggi, MD +41763261306

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Kantonsspital Aarau, Department of Ophthalmology, Switzerland Recruiting
Aarau, Aargau, Switzerland, 5001
Contact: Hanspeter E Killer, MD, Prof    +41628385021   
Contact: Gregor P Jaggi, MD    +41763261306   
Principal Investigator: Hanspeter E Killer, MD Prof         
Sponsors and Collaborators
Kantonsspital Aarau
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Principal Investigator: Hanspeter E Killer, MD, Prof Kantonsspital Aarau, Department of ophthalmology

Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00306657    
Other Study ID Numbers: 2005/057
First Posted: March 24, 2006    Key Record Dates
Last Update Posted: June 27, 2011
Last Verified: April 2007
Keywords provided by Kantonsspital Aarau:
Glaucoma Open-Angle
Normal tension glaucoma progressive
chronic open angle glaucoma progressive
optic nerve sheath fenestration
cerebrospinal fluid
Beta-Trace Protein
Additional relevant MeSH terms:
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Glaucoma, Open-Angle
Ocular Hypertension
Eye Diseases