方法：回顾性分析行玻璃体切除术治疗的老年PDR患者136例150眼，对手术要点、术后视力、手术并发症进行总结分析。

结果：术后随访6～15mo，术后视力提高115眼(76.7%)，视力不变23眼(15.3%)，视力下降12眼(8.0%)； 其中Ⅳ期视力提高56眼(82.3%)，视力不变8眼(11.8%)，视力下降4眼(5.9%)； Ⅴ期视力提高36眼(75.0%)，视力不变8眼(16.7%)，视力下降4眼(8.3%)； Ⅵ期视力提高22眼(64.7%)，视力不变12眼(35.3%)，视力下降0眼。患眼Ⅳ期、Ⅴ期术后视力改善程度明显好于Ⅵ期。

结论：玻璃体切除术并发症少，能有效治疗PDR。

METHODS:One hundred and thirty-six elder patients(150 eyes)with PDR treated by vitrectomy were retrospectively analyzed, the postoperative visual acuity, complications and essential points during operations were analysed.

RESULTS:Postoperative follow-ups were 6～15mo. Visual acuity improved in 115 eyes(76.7%),unchanged in 23 eyes(15.3%)and decreased in 12 eyes(8.0%). The patients whose eyes were in PDR phase Ⅳ had their visual acuity improved in 56 eyes(82.3%), unchanged in 8 eyes(11.8%)and decreased in 4 eyes(5.9%). The patients in phase V had their visual acuity improve in 36 eyes(75.0%), unchanged in 8 eyes(16.7%), and decreased in 4 eyes(8.3%). Those in phase Ⅵ had their visual acuity improve in 22 eyes(64.7%), unchanged in 12 eyes(35.3%)and decreased in 0 eyes. Visual acuity of the eyes in phase Ⅳ and V improved significantly than those in phaseⅥ after vitrectomy.

CONCLUSION:Vitrectomy has fewer complications, which is effective for PDR.