The Long-term Outcome After Cataract Surgery With Toric Intraocular Lens Implantation
试验速览
- 阶段
- 不适用
- 入组人数
- 60
- 主要终点
- changes of axis of corneal astigmatism from pre-surgery to 3-5 years after surgery
研究概览
简要总结
Corneal astigmatism is refractive error that impairs uncorrected visual acuity. When patients undergo cataract surgery, implantation of toric IOL is deemed the most effective choice for correcting corneal astigmatism and reducing postoperative spectacle dependence. Previous studies report that the visual effects and rotational stability of toric IOLs are well maintained over 1- or 2-year follow-up periods. However, the long-term changes in the effects of toric IOLs remain unclear.
详细描述
Corneal astigmatism is refractive error that impairs uncorrected visual acuity. When patients undergo cataract surgery, implantation of toric IOL is deemed the most effective choice for correcting corneal astigmatism and reducing postoperative spectacle dependence. Previous studies report that the visual effects and rotational stability of toric IOLs are well maintained over 1- or 2-year follow-up periods. However, there is a long-term against-the-rule (ATR) change of corneal astigmatism with aging，which influences the long-term outcomes of refractive surgery. The long-term changes in the effects of toric IOLs remain unclear. This study aim to observe the clinical effect of Toric IOL implantation in the correction of corneal astigmatism.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •≥18years old
- •Regular astigmatism
- •Corneal astigmatism ≥ 0.75D
排除标准
- •Macular degeneration and retinal disease, history of glaucoma, corneal disease
- •Previous corneal or intraocular surgery, and history of ocular inflammation.
- •Pupils can not be dilated (< 7mm)
结局指标
主要结局
changes of axis of corneal astigmatism from pre-surgery to 3-5 years after surgery
时间窗: before surgery and 3-5 years after surgery
using Pentacam measure cornea astigmatism of the subjects
changes of magnitude of corneal astigmatism from pre-surgery to 3-5 years after surgery
时间窗: before surgery and 3-5 years after surgery
using Pentacam measure cornea astigmatism of the subjects
changes of manifest refractive astigmatism from1 -3 months after surgery to 3-5 years after surgery
时间窗: 1-3 months after surgery and 3-5 years after surgery
measured using subjective refraction by Professional optometrists
次要结局
未报告次要终点
研究者
Yune Zhao
Vice president of Eye Hospital of Wenzhou Medical University
Wenzhou Medical University