Effects of Marihuana Use on Optic Nerve Parameters and Ocular Blood Flow

October 13, 2015 updated by: Orna Geyer, Carmel Medical Center
Purpose of study: to check the effect of medical cannabis given for approved medical indications on ocular parameters including intra ocular pressure, optic nerve fibers thickness and choroidal thickness.

Study Overview

Status

Unknown

Conditions

Detailed Description

Purpose of study: to check the effect of medical cannabis given for approved medical indications on ocular parameters including intra ocular pressure, Retinal Nerve Fiber Layer (RNFL) thickness, optic nerve fibers thickness and choroidal thickness.

Adult patients with no ocular pathology that are being treated in the neurology or pain clinics with medical cannabis for different indications, were examined in the eye clinic.

First examination took place after the patient was not smoking for 5 hours. Three more examinations took place 1 hour 3 hours and 5 hours after smoking cannabis.

The following parameters were checked: blood pressure, pulse, visual acuity, intra ocular pressure, corneal thickness, axial length, slit lamp examination of anterior segment, fundoscopy and Optical Coherence Tomography (OCT) of the retina, and optic nerve.

Study Type

Observational

Enrollment (Anticipated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Israel
      • Haifa, Israel
        • Recruiting
        • Carmel Medical Center
        • Contact:
        • Principal Investigator:
          • Orna Geyer, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Adult patients over the age of 18, with no ocular pathology that are being treated in the neurology or pain clinics with medical cannabis for different indications.

Description

Inclusion Criteria:

  • Age over 18
  • Treated with medical cannabis for approved medical indications

Exclusion Criteria:

  • Known ocular pathology
  • Topical or systemic treatment for intra ocular pressure
  • Previous topical, intra ocular or systemic steroid treatment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Intra ocular pressure
Time Frame: 5 hours
5 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Carmel Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2014

Primary Completion (Anticipated)

March 1, 2016

Study Completion (Anticipated)

May 1, 2016

Study Registration Dates

First Submitted

March 5, 2014

First Submitted That Met QC Criteria

March 5, 2014

First Posted (Estimate)

March 6, 2014

Study Record Updates

Last Update Posted (Estimate)

October 14, 2015

Last Update Submitted That Met QC Criteria

October 13, 2015

Last Verified

October 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CMC-14-0001-CTIL

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Intra Ocular Pressure

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Slovenia

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe