双通道视觉质量分析系统评估不同方位切口白内障术后的视觉质量

摘要

[目的] 采用双通道视觉质量分析系统(OQAS)比较不同方位的透明角膜切口白内障手术前后的客观视觉质量变化.[方法] 收集2016年1~5月本院收治的单纯年龄相关性白内障患者64例64眼,根据术中透明角膜切口的位置不同分为两组,A组采用透明角膜切口,位于双眼颞侧;B组采用正上方透明角膜切口,约12点方位.比较两组视力、客观散射指数(objective scattering index,OSI)值及对比度为100%、20%、9%时的OV值(OQAS value,OV100%、OV20% 和OV9%).[结果] ①所有患者术后1 d至1周裸眼视力及矫正视力均逐渐上升,其中A组术后1 d、1周裸眼视力及矫正视力均高于同时间点B组患者视力,差异有显著性(P<0.05);②术后1 d及1周两组患者OSI值均较术前逐渐上升,各时间点比较均具有统计学意义(P<0.05),其中术后1 d及1周A组OSI值明显低于B组,有统计学意义(P<0.05);术后1 d、1周、1个月及3个月两组患者OV9%值均较术前逐渐上升,各时间点比较均具有统计学意义(P<0.05),A组各时间点OV9%值均明显高于B组,差异有统计学意义(P<0.05).[结论] 白内障术中采用颞侧透明角膜切口,术后眼内散射情况小于正上方透明角膜切口,且早期视力恢复快,视觉质量高,远期效果有待进一步研究.%[Objective]To compare the changes of optical quality in patients underwent cataract surgery with different orientations of clear corneal incision by dual channel optical quality analysis system(OQAS).[Methods]Sixty-four patients with age-related cataract in our hospital from January to May 2016 were divided into two groups according to the location of the transparent corneal incision;the Group A was treated with clear corneal incision located at the temporal side of the eyes, while the Group B was treated with a clear corneal incision at the top of the cornea, which was located around 12 clock.The objective scattering index (OSI) values and OQAS values (OV100%、OV20% and OV9%) of the two groups were compared.[Results](1)The uncorrected visual acuity and corrected visual acuity of all patients were increased gradually from 1d to 1 week after operation, and the visual acuity and corrected visual acuity of the Group A were higher than those of the Group B at the same time point after operation , the difference was significant (P<0.05);(2) The OSI values of the two groups of patients were higher than those before operation at 1d and 1 week after operation, and there was statistical significance in each time point(P<0.05).The OSI value of the Group A was significantly lower than that of the Group B at 1 D and 1 week after operation, with statistical significance (P<0.05);The OV9% values of the two groups of patients at each time point were higher than those before the operation at 1d, 1 week,1 month and 3 months, all of which had statistical significant(P<0.05).The OV9% values of the Group A at each time point were significantly lower than those in the Group B, the difference was statistically significant (P<0.05).[Conclusion]The application of clear corneal incision located at the temporal side of the eye in cataract surgery may acquires less intraocular scattering than that of clear corneal incision at the top of the cornea with a faster vision recovery and better optical quality.Yet,the long-term effect needs to be further studied.