方法：回顾性分析白内障手术结束时前房不稳定的病例，将其分成两组，注气组31眼为前房注气组，注液组27眼为注液(平衡盐溶液，BSS)组，观察前房气泡吸收情况及前房稳定性，对角膜内皮细胞、视力、眼压的影响，有无其它并发症如眼内炎症、黄斑囊样水肿。

结果：两组术前眼压对比、术后眼压对比差异均无统计学意义(P>0.05)，注气组术前眼压(15.29±0.53)mmHg与术后1d眼压(14.58±0.63)mmHg对比差异无统计学意义(P>0.05)。两组术前角膜内皮细胞密度对比(2 435.71±194.80 vs 2 430.74±191.95 个/mm²)，术后角膜内皮细胞密度对比(2 400.74±194.00 vs 2 398.22±193.36 个/mm²)差异均无统计学意义(P>0.05)。两组术后均未出现浅前房、眼内炎症。术中单次操作前房恢复稳定率注气组94%，注液组33%，两组对比差异具有统计学意义(P<0.05)。

结论：应用前房注气治疗白内障术毕出现前房恢复不稳定情况，安全有效，简单快速。

METHODS:The cases with unstable anterior chamber occurred at the end of cataract surgery were retrospectively analyzed. They were divided into two groups, group A(31 eyes)received anterior chamber injection of sterile air, group B(27 eyes)underwent anterior chamber injection of balanced salt solution(BSS). The anterior chamber bubbles and the stability of anterior chamber, the influence on corneal endothelial cells, visual acuity, and intraocular pressure(IOP), the presence of other complications such as intraocular inflammation, cystoid macular edema were observed.

RESULTS:There were no statistically significant differences comparing preoperative and postoperative IOP between two groups(P>0.05). In group A, preoperative IOP was 15.29±0.53mmHg and 1d postoperative IOP was 14.58±0.6mHg, with no statistical difference(P>0.05). Preoperative corneal endothelial cell density between two group 2 435.71±194.80cells/mm²vs 2 430.74±191.95cells/mm², postoperative between two groups were 2 400.74±194.00cells/mm² vs 2 398.22±193.36cells/mm² with no statistically significant difference(P>0.05). There was no postoperative shallow anterior chamber and intraocular inflammation in the two groups. The success rate of single operation restoring the stability of anterior chamber in group A was 94%, group B was 33%, the difference had statistical significance(P<0.05).

CONCLUSION:It is safe and effective, simple and quick applying anterior chamber gas injection in the treatment of unstable anterior chamber at the end of cataract surgery.