Surgical Techniques for Epiretinal Membrane Removal in Pars Plana Vitrectomy: A Comparative Study Between 20-Gauge and 23-Gauge Vitrectomy
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 50
- 主要终点
- success rate
研究概览
简要总结
Objective: to evaluate anatomical and visual outcomes of 23-gauge vitrectomy for retinal detachment with silicone oil injection in fifty cases. The rate of recurrence, the incidence of proliferative vitreoretinopathy (PVR) and the value of risk factors.
Participants and Methods: fifty cases with RD with mixture of epiretinal and subretinal membranes were collected. Pars plan vitrectomy, 23gauge vitrectomy were done to these cases, then silicone oil removed 6 weeks after primary surgery.
Main Outcome Measures: The anatomical success rate,the failure rate ,the rate of retinal breaks in both groups, and reproliferation rate.
详细描述
50 Patients were included if they had retinal detachment, moderate degrees of PVR, PVR ≥ Grade C, previous buckle surgery and pseudophakia. A good and correct assessment of the detached retina was done. Investigator followed the Lincoff rules to find the retinal breaks. Investigator performed a three-port vitrectomy: one infusion trocar and two instruments trocars. Non-contact wide-angle viewing systems (Resight- Biom) have a viewing field of 60-130° was used. Investigator used Perfluorocarbon liquid (PFCL) for attaching the retina with its gravity. Then performing PFCL against air exchange.The retina will be attached under air tamponade. Laser photocoagulation was performed in the air-filled eye.
Investigator applied the laser effects confluently surrounding all retinal breaks. Then silicone oil (1000 centistokes) was injected as a final step and permanent tamponade.After 3-6 months investigator removed the silicone and examined the retina for 6 weeks after surgery to detect the recurrent cases.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Outcomes Assessor)
盲法说明
Each of the recruited patients were assigned a study number and randomized in accordance with a simple block randomization scheme.
入排标准
- 年龄范围
- 23 Years 至 58 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •they had retinal detachment,
- •moderate degrees of PVR
- •PVR ≥ Grade C
- •previous buckle surgery
- •pseudophakia.
排除标准
- •the retinal tear was greater than 90 degrees
- •presence of intravitreal foreign body
- •previous vitrectomy done before
- •if follow-up data were unavailable for a minimum follow-up of 6 months following the final retinal procedure.
结局指标
主要结局
success rate
时间窗: 42 days
success rate after first RD surgery and silicone oil removal
number of surgical interference
时间窗: 4 years
numbers of vitrectomies done after silicone oil removal
The failure rate
时间窗: 42 days
The failure rate after silicone oil removal
次要结局
- lower retinal breaks(4 years)
研究者
khaled hamdi elbaklish
Clinical Professor
Ain Shams University