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Optic Nerve Compliance Study

NCT00328835 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2006-10-17

No results posted yet for this study

Summary

Chronic glaucoma is one of the leading causes of blindness and visual loss in the developed world. It is a condition where long term exposure to high eye pressures (intra-ocular pressure) damages the nerve fibres in the eye. This damage can be seen by examiners as changes in the optic nerve. The exact mechanism of how the high intra-ocular pressure causes nerve damage is unknown. Both physiological and mechanical mechanisms are thought to play a role. Previous authors have reported structural changes in the connective tissue of optic nerves of eyes with glaucoma. Structural changes in the optic nerve head which affect the mechanical compliance of the nerve may be significant in the cause of glaucomatous nerve damage. This study aims to assess the compliance of the optic disc in subjects with and without glaucoma. We would test compliance by imaging the optic discs of participants before and during a brief (less than two minutes) increase in intra-ocular pressure. We would aim to repeat the tests on the same subjects 3 years later to see how compliance changed. We would also seek to correlate other important parameters such as corneal thickness and visual field changes with our findings

Conditions

Interventions

PROCEDURE

Brief Elevation of IOP

Sponsors & Collaborators

  • Capital Vision Research Trust

    lead OTHER

Principal Investigators

  • Anthony P Wells, FRANZCO · CVRT, Wellington School Of Medicine - University of Otago

Study Design

Allocation
NON_RANDOMIZED
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2006-03-31
Completion
2006-04-30

Countries

  • New Zealand

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 NCT00328835 on ClinicalTrials.gov