Influence of Residual Astigmatism on Visual Acuity in Patients Undergoing Cataract Surgery With Trifocal Intraocular Lens Implantation
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 48
- 试验地点
- 1
- 主要终点
- Visual Acuity
研究概览
简要总结
MAIN OBJECTIVE: To assess the influence of residual astigmatism on visual acuity in the different lens foci in patients operated on for cataracts with a trifocal intraocular lens implant.
SECONDARY OBJECTIVE: To study the influence of residual astigmatism on the visual quality of the patient in the far focus and to determine if there are differences of affectation in the two study groups.
详细描述
It will be studied how small residual astigmatisms after cataract surgery degrade the visual acuity of patients in the three focal planes of trifocal IOLs. Not only VA will be studied, but also visual quality through contrast sensitivity curves.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 年龄范围
- 50 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Bilateral surgery performed by the same surgeon
- •IOLs implanted IOLs FineVision (MicroF) and FineVision Toric (PodFT)
- •Patients with pre-surgery corneal astigmatism less than 2.5 D
- •Patients whose pupillary diameter in physiological position (conditions of lower photopic pupil) not over 4 mm.
排除标准
- •Post-surgical refractive residual astigmatisms ≧ 1.55D
- •Previous corneal or intraocular surgeries
- •Active diseases
- •Eye complications during the 3-month follow-up
结局指标
主要结局
Visual Acuity
时间窗: 3 months following cataract surgery
Visual acuity will be measured at distance, intermediate distance (67 cm) and near (40 cm). Visual acuities will be obtained with logarithmic notation
Contrast Sensitivity Function (CSF)
时间窗: 3 months following cataract surgery
Contrast sensitivity will be measured at far, intermediate distance (67 cm) and near (40 cm).
次要结局
- Differences between groups(3 months following cataract surgery)
研究者
Enrique Ordiñaga-Monreal, OD, MSc
Clinical Optometrist
Clinica Oftalmologica TACIR