Introduction of a Modified Luminous Efficiency Function V(λ)' That Addresses Total Light Transmittance of Patients That Underwent Pseudophakic Presbyopic Corrections
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 100
- 试验地点
- 1
- 主要终点
- Minimum light intensity
研究概览
简要总结
Primary objective of this study is to construct and validate a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients that underwent bilateral pseudophakic presbyopic correction with trifocal intraocular lenses (IOLs) implantations.
详细描述
Present study aims to identify in which degree multifocal IOLs modify eye light transmission and estimate the necessary task and environmental lighting adjustment in order to address lighting needs of patients following bilateral pseudophakic presbyopic corrections. Specifically, the aim of this study is to identify the minimum light intensity in which patients that underwent pseudophakic presbyopic correction with trifocal IOLs can reach their maximum visual acuity (measured when lights are at the 100% lighting level)
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
- 45 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •age between 45 to 70 years
排除标准
- •astigmatism >1.00 diopters
- •former incisional eye surgery
- •corneal or fundus disease
- •diabetes mellitus
- •autoimmune diseases
- •neurological or psychiatric diseases
- •posterior capsule rupture or lens misalignment
- •postoperative uncorrected bilateral distant visual acuity < 8/10.
结局指标
主要结局
Minimum light intensity
时间窗: 6 months postoperatively
Minimum light intensity in which participants reach their maximum critical visual acuity
次要结局
- Critical Visual Acuity (CVA)(6 months postoperatively)
研究者
Georgios Labiris
Associate Professor of Ophthalmology
Democritus University of Thrace