Joondeph B C, Flynn H W
Department of Ophthalmology, St. John Hospital, Detroit, Michigan.
Am J Ophthalmol. 1990 Sep 15;110(3):250-3. doi: 10.1016/s0002-9394(14)76339-1.
We treated two patients who had nonmagnetic subretinal foreign bodies (metallic pellet and lens nucleus fragment) in the presence of a retinal detachment and a distant retinal break. After the pars plana vitrectomy, the soft, flexible tip of the cannulated extrusion needle was used to push the foreign object gently away from the posterior pole toward the retinal break where it was grasped and removed from the eye. This technique for subretinal foreign body removal is preferable to creating a large posterior retinotomy overlying the foreign body because of the potential risks of further macular trauma, hemorrhage, or proliferation of periretinal membranes from the retinotomy site.
我们治疗了两名患有非磁性视网膜下异物（金属弹丸和晶状体核碎片）的患者，他们同时存在视网膜脱离和远处视网膜裂孔。在进行玻璃体切割术后，使用空心挤压针柔软、可弯曲的尖端将异物轻轻地从后极部推向视网膜裂孔，在那里将异物抓住并从眼内取出。这种视网膜下异物取出技术优于在异物上方进行大的后部视网膜切开术，因为后者存在进一步损伤黄斑、出血或视网膜切开部位视网膜前膜增生的潜在风险。
