方法：临床对93例186眼重度非增殖期糖尿病视网膜病变患者，治疗前后均做视力、FFA、OCT 视野等相关检查。随机分治疗组48例96眼，采用Pascal模式扫描光凝一次完成全视网膜光凝治疗，同时设对照组45例90眼采用多波长氪离子常规全视网膜光凝，分4～5次治疗。

结果：治疗组视力提高总有效率为85.4%，对照组总有效率为82.2%，两组总有效率比较无统计学意义； 但治疗组激光术后视野光敏感度无明显下降，而对照则显著降低，术后视功能恢复较对照组好。

结论：Pascal模式扫描光凝治疗治疗糖尿病视网膜病变临床疗效优于单纯的全视网膜光凝，具有治疗后视野无明显下降、治疗时间明显缩短和疼痛感小的优点。

METHODS: A total of 93 patients with retinopathy(186 eyes)were randomly divided into treatment group(96 eyes of 48 patients)who treated with panretinal photocoagulation(PRP)using Pascal at one time and control group(90 eyes of 45 patients)who treated with PRP using multi-wavelength krypton laser in 4-5 times. The visual acuity, FFA, OCT, visual field will be evaluated of each patient before and after the treatment.

RESULTS: The visual acuity findings were stated as below: the overall effective rate of visual acuity in treatment group is 85.4% while it is 82.2% in control group. The overall effective rate in two groups has no significant difference. The retinal sensitivity has no significant decrease in the treatment group while which decreased significantly in the control group.

CONCLUSION: The clinical efficacy of Pascal on treating the PDR is better than which of the regular argon laser. The field of vision has no significant narrowed after the Pascal treatment which can efficiently shorten the length of treatment and reduce the pain sensation.