Tomographic Analysis of Anterior, Posterior and Total Corneal Refractive Power Changes After Femtosecond Laser-assisted Keratotomy After Laser Lens Surgery
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 23
- 主要终点
- Change from Baseline Total corneal refractive power at 3 months
研究概览
简要总结
To analyze the effect of femtolaser-assisted keratotomy on corneal astigmatism (anterior, posterior and Total corneal refractive power) measured by Scheimpflug tomography after laser lens surgery.
详细描述
This study investigated patients' eyes with low to moderate total corneal refractive power determined with Scheimpflug tomography (Pentacam HR) after penetrating femtosecond laser-assisted keratotomy (pFLAK) and laser lens surgery. The anterior corneal astigmatism, posterior corneal astigmatism and total corneal refractive power were determined before, 1 month and 3 months after lens surgery. Vector analysis according to the Alpins' method was used to calculate surgically induced astigmatism (SIA).
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients who received penetrating femtosecond laser-assisted lens surgery with low to moderate corneal astigmatism
排除标准
- •Eyes with irregular corneal astigmatism such as keratoconus, previous corneal surgery, acute or chronic ophthalmic diseases of the anterior segment and intraoperative complications were not included in this study.
结局指标
主要结局
Change from Baseline Total corneal refractive power at 3 months
时间窗: Before and 3 months after lens surgery
Total corneal astigmatism (anterior and posterior astigmatism)
次要结局
- Change from Baseline Posterior corneal astigmatism at 3 months(Before and 3 months after lens surgery)
- Change from Baseline Anterior corneal astigmatism at 3 months(Before and 3 months after lens surgery)
研究者
Myriam Böhm
Professor Dr. med. Thomas Kohnen
University Clinic Frankfurt