Correlation Between Corneal Topographic Patterns and Refractive Status Of The Eye in Sohag City,Egypt
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 100
- 试验地点
- 2
- 主要终点
- Thickness
研究概览
简要总结
To evaluate corneal topographic pattern & its correlation with refractive status of the eye .
详细描述
This study will be established in The Future Center for refractive surgery, Sohag, Egypt.
This study will include 100 eyes of patients aged over 15 years. All patients were subjected to topography imaging.
Using Oculus Pentacam® which is s a rotating Scheimpflug camera. The rotational measuring procedure generates Scheimpflug images in three dimensions.
The scheimpflug principle describes the optical imaging condition when the plane of an object is not parallel to the film of the camera and has to cut each other in one line or one point of intersection with the advantage to achieve wide depth of focus.
Scheimpflug imaging attains a wide and high depth-of-focus , providing sharp images that include information from an anterior corneal surface through to the posterior crystalline capsule; this depends mainly on media transparency and pupil size .
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Diagnostic
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 15 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients aging more than 15 years old
- •All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction).
- •There is no restrictions on the range and regularity of keratometry.
排除标准
- •Patients with a history of any trauma to the eye.
- •Patients with recent contact lens wear.
- •history of ocular surgery .
- •Patients with distance corrected visual acuity or abnormal retinoscopy examination (e.g., scissoring reflex).
- •If there was any error in reading the topographic map.
- •Patients with anemotropic refraction.
结局指标
主要结局
Thickness
时间窗: 3 months after begin of study
Topographic values using Oculus Pentacam®
degree of astigmatism in D
时间窗: 3 months after begin of study
Topographic values using Oculus Pentacam®
front and back elevation of the apex (um).
时间窗: 3 months after begin of study
Topographic values using Oculus Pentacam®
maximum keratometry
时间窗: 3 months after begin of study
Topographic values using Oculus Pentacam®
次要结局
未报告次要终点
研究者
Ahmed Abdallah Abdelaal
Ophthalmology Resident at Akhemim Central hospital
Sohag University