Retinal Detachment Clinical Trial
Official title:
Surgical Techniques for Epiretinal Membrane Removal in Pars Plana Vitrectomy: A Comparative Study Between 20-Gauge and 23-Gauge Vitrectomy
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.
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.
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