睫状体平坦部四切口玻璃体手术治疗严重增生性糖尿病视网膜病变

目的探讨睫状体平坦部四切口玻璃体手术治疗有广泛纤维血管膜增生的糖尿病视网膜病变（PDR）的临床效果。方法为病例对照试验。回顾性选择27例（28只眼）有广泛纤维血管膜增生的PDR Ⅵ期患者作为试验组,采用睫状体平坦部四切口玻璃体手术,双手进行眼内操作,如膜分离与切除,视网膜复位,眼内光凝硅油充填。选择同期有广泛纤维血管膜增生的PDR Ⅵ期患者30例（30只眼）作为对照组,由同一术者完成睫状体平坦部三切口玻璃体手术。结果试验组28只眼均顺利完成膜分离与切除,1只眼出现2个医源性视网膜裂孔。随访7～54个月,术后视网膜均复位,多数患者视力有不同程度提高。对照组2只眼有部分膜残留,3只眼出现4个医源性视网膜裂孔,随访12个月视网膜均复位,3只眼发生新生血管性青光眼。结论四切口玻璃体手术采用双手操作眼内剥膜,可明显提高手术效率,减少组织损伤,是治疗有广泛纤维血管膜增生的严重PDR的较好方法。（中华眼科杂志,2008,44：17—19）

Four-port pars plana vitrectomy for severe proliferative diabetic retinopathy

OBJECTIVE: To investigate the 4-port pars plana vitrectomy in eyes with severe proliferative diabetic retinopathy (PDR). METHODS: It was a case-control study. Twenty-eight eyes in 27 patients with extensive fibrovascular proliferation associated with PDR were retrospectively collected, who were undergone 4-port pars plana vitreous surgery with bimanual manipulation techniques, such as membrane dissections and enbloc membranectomy. The control group consisted of 30 eyes in 30 patients with PDR which were undergone 3-port pars plana vitrectomy by the same surgeon. RESULTS: Twenty-eight eyes were undergone membrane dissection and enbloc membranectomy smoothly during 4-port pars plana vitrectomy, 2 iatrogenic holes occurred in 1 eye. During the follow up 7 months to 4.5 years, the retina was fully attached in all eyes, visual acuity had improved except 1 eye which complicated with neovascular glaucoma. In the control group, membranes partially remained in 2 eyes, 4 iatrogenic holes appeared in 3 eyes, neovascular glaucoma occurred in 3 eyes, the retina was reattached during the follow-up time from 12 to 34 months. CONCLUSIONS: For severe proliferative diabetic retinopathy, the 4-port pars plana vitrectomy with bimanual manipulations of membrane peeling is safe and efficiency.