NCT00427063已完成不适用
Heredity of Retinal Vessel Tortuosity - A Twin Study
Glostrup University Hospital, Copenhagen1 个研究点 分布在 1 个国家目标入组 218 人开始时间: 1998年1月最近更新:
适应症
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 218
- 试验地点
- 1
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Defined Population
- 时间视角
- Other
入排标准
- 年龄范围
- 20 Years 至 46 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Samesex twin pairs of self-assessed good health
排除标准
- •Diabetes mellitus
- •Hypertension
- •Thyroid disease
- •Cataract or other opacities of the refractive media
- •Missing fundus photographs
研究者
研究点 (1)
Loading locations...
相似试验
撤回
不适用
Progressive Open Angle Glaucoma (OAG) and Ocular Blood FlowOpen Angle GlaucomaNCT00912470Medical University of Vienna
已完成
不适用
The Association of the Peripheral Retinal Changes and Genotypic Changes in Patients With Age Related Macular DegenerationPeripheral Retinal Degenerations, Age Related Macular Degeneration PolymorphismsNCT03492853University Hospital "Sestre Milosrdnice"310
Unknown
不适用
Epidemiologic, Laboratory, and Clinical Characterization of Individuals With Ocular DiseasesOcular DiseasesNCT00249392Nanjing Medical University800
已完成
不适用
Genetics of Spina Bifida and AnencephalyAnencephalyAcraniaNCT00636233Duke University10,000
已完成
不适用
Clinical and Genetic Studies of Families With Congenital or Hereditary CataractsCataractNCT00056771National Eye Institute (NEI)3,432