Visual Performance of Multifocal Intraocular Lenses Following Removal of the Crystalline Lens
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Best corrected visual acuity at intermediate distance
研究概览
简要总结
To evaluate the visual performance after bilateral implantation of multifocal intraocular lenses.
详细描述
This study evaluates the visual performance after bilateral implantation of multifocal intraocular lenses (IOL). This prospective study is performed at the department of Ophthalmology, Goethe University, Frankfurt, Germany.
Patients who received bilateral implantation of a multifocal intraocular lens pre-enrollment were included consecutively. Exclusion criteria were previous ocular surgeries excluding cataract surgery and refractive lens exchange, regular corneal astigmatism of >1.5 diopter, and ocular pathologies or corneal abnormalities. At 3 months postoperative examination included manifest refraction; monocular and binocular uncorrected (UCVA) and distance-corrected (DCVA) visual acuity in at far, intermediate at near distance (logMAR); slit-lamp examination. 3 months postoperatively defocus testing, binocular contrast sensitivity (CS) under photopic and mesopic conditions, and a questionnaire on subjective quality of vision, optical phenomena, and spectacle independence were performed.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •bilateral cataract surgery or refractive lens exchange with the implantation a multifocal intraocular lens
- •a regular corneal astigmatism < 1.5 D measured with Pentacam (Oculus, Wetzlar, Germany)
排除标准
- •other previous ocular surgeries
- •ocular pathologies
- •corneal abnormalities
- •endothelial cell count below 2000/mm²
结局指标
主要结局
Best corrected visual acuity at intermediate distance
时间窗: Measured 3 month after lens surgery
Monocular and binocular corrected visual acuity at intermediate distance measured in logMAR 3 month after lens surgery
次要结局
- Best corrected visual acuity at far distance(Measured 3 month after lens surgery)
- Best corrected visual acuity at near distance(Measured 3 month after lens surgery)
- Uncorrected visual acuity at far distance(Measured 3 month after lens surgery)
- Uncorrected visual acuity at near distance(Measured 3 month after lens surgery)
- Defocus curve testing(Measured 3 month after lens surgery)
- Uncorrected visual acuity at intermediate distance(Measured 3 month after lens surgery)
- Binocular contrast sensitivity (CS) under photopic, mesopic, and mesopic with glare lighting conditions(Measured 3 month after lens surgery)
研究者
Myriam Böhm, MD
Professor Dr. med. Thomas Kohnen
University Clinic Frankfurt