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Heredity of Retinal Vessel Tortuosity

This study has been completed.
Sponsor:
Collaborator:
Juvenile Diabetes Research Foundation
Information provided by:
Glostrup University Hospital, Copenhagen
ClinicalTrials.gov Identifier:
NCT00427063
First received: January 25, 2007
Last updated: NA
Last verified: January 2007
History: No changes posted
  Purpose

The purpose of this study is to asses the relative influence of genetic and environmental influence on the tortuosity of retinal arterioles in eyes of 218 healthy Danish twins aged 20-46 years. We expect to find a high heredity for the variation in tortuosity. This knowledge can contribute to the elucidation of the pathology in retinal diseases.


Condition
Retinopathy of Prematurity

Study Type: Observational
Study Design: Observational Model: Defined Population
Time Perspective: Cross-Sectional
Official Title: Heredity of Retinal Vessel Tortuosity - A Twin Study

Resource links provided by NLM:


Further study details as provided by Glostrup University Hospital, Copenhagen:

Estimated Enrollment: 218
Study Start Date: January 1998
Estimated Study Completion Date: December 1998
Detailed Description:

All persons underwent an ophthalmic examination including refraction, slit lamp biomicroscopy and digital fundus photography. Two independent graders (both with an MD degree) made a visual grading of the severity of tortuosity of the retinal arterioles in the fundus images.

  Eligibility

Ages Eligible for Study:   20 Years to 46 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Samesex twin pairs of self-assessed good health

Exclusion Criteria:

  • Diabetes mellitus
  • Hypertension
  • Thyroid disease
  • Cataract or other opacities of the refractive media
  • Missing fundus photographs
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00427063

Locations
Denmark
Department of Ophthalmology Glostrup Hospital
Glostrup, Copenhagen County, Denmark, DK-2600
Sponsors and Collaborators
Glostrup University Hospital, Copenhagen
Juvenile Diabetes Research Foundation
Investigators
Principal Investigator: Michael Larsen, Prof. MD Department of Ophthalmology Glostrup Hospital University of Copenhagen
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00427063     History of Changes
Other Study ID Numbers: Danish Twin Registry 1998
Study First Received: January 25, 2007
Last Updated: January 25, 2007
Health Authority: Denmark: Ethics Committee

Keywords provided by Glostrup University Hospital, Copenhagen:
retinal vessels
tortuosity

Additional relevant MeSH terms:
Retinopathy of Prematurity
Eye Diseases
Infant, Newborn, Diseases
Infant, Premature, Diseases
Retinal Diseases

ClinicalTrials.gov processed this record on November 20, 2014