Comparison of Horizontal and Vertical IOL Haptic Orientation in Negative Dysphotopsia.
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 主要终点
- Presence of negative dysphotopsia after cataract surgery at 6 months
研究概览
简要总结
Previous studies attempted to understand the dysphotopsia phenomenon by examining intraocular lens type, anterior capsule depth, iris-to-lens depth, lens refractive material, clear cornea incision wounds and anterior capsulorrhexis. However, there is limited literature in understanding haptic orientation and negative dysphotopsia; postulated theories and anecdotal reports relate to horizontal haptic orientation and the lateralization of rays such that light is received both in smaller width and anterior to the peripheral retina; however, no formal studies currently exist.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Participant)
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 with bilateral cataracts that are visually significant meeting standard criteria for removal and select standard monofocal lens implantation.
排除标准
- •Patients with any prior refractive surgery including prior cataract surgery, corneal ocular pathology, iris atrophy/damage, retinal or optic nerve pathology. Patients with history of peripheral vision loss. Patients selecting multifocal or toric lens implantation.
结局指标
主要结局
Presence of negative dysphotopsia after cataract surgery at 6 months
时间窗: 6 months
Presence of negative dysphotopsia in the vertical IOL placement compared to horizontal IOL placement
次要结局
- Presence of negative dysphotopsia after cataract surgery at 1 week(1 week)
- Presence of negative dysphotopsia after cataract surgery at 1 month(1 month)