方法：收集我院2010-01/2012-11糖尿病弥漫性黄斑水肿行白内障手术患者共30例40眼，随机分为两组，每组20眼，一组术前行黄斑区格栅样光凝，一组术前未行治疗，两组术前和术后进行眼底血管荧光造影检查、黄斑区OCT检查，比较两组术前术后视力和黄斑水肿的变化。

结果：术前行黄斑区格栅样光凝的患者，术后视力改善、黄斑水肿没有加重； 术前未行激光处理的患者术后视力改善不明显、黄斑水肿加重。

结论：糖尿病弥漫性黄斑水肿患者在白内障术前行黄斑区格栅样光凝可以改善视力、减轻术后黄斑水肿的加重。

METHODS: A total of 30 patients(40 eyes)were enrolled in the study. All the patients were randomly divided into two groups: group A: 20 eyes were treated with macular grid photocoagulation before cataract surgery; group B: 20 eyes were treated with cataract surgery only.

RESULTS: The patients treated with macular grid photocoagulation before cataract surgery. Postoperative visual acuity was improved, the edema of macular decreased. The patients treated with cataract surgery only, visual acuity showed no evident change and macular edema remained stable or creased.

CONCLUSION: Macular grid photocoagulation before cataract surgery for diabetes patients can improve the outcome and vision of the patients.