SITA-FAST视野阈值程序检查在可疑青光眼检查中的应用

Application of SITA-fast perimetric threshold strategy in patients with suspect glaucoma

目的:采用Humphery视野新的SITA-Fast阈值程序与传统的Full Thfreshold全阈值程序对正常人和可疑青光眼患者进行检查,评价SITA-Fast阈值程序检查在可疑青光眼诊断中的价值。方法:15例（30眼）正常者和13例（18 眼）可疑青光眼患者分别予 Humphery750型全自动视野分析仪进行30°-2中心视野检查,所有研究对象先后测试二次,每次测试程序包括SITA-Fast和Full Threshold两种,检查顺序随机。比较第二次测试两种程序的检查时间和视野指数（MD、PSD）。结果:在正常组,采用SITA-Fast阈值程序所用平均时间为Full Threshold阈值程序所用时间的32.3％;可疑青光眼组SITA-Fast所用平均时间为Fu11 Threshold所用时间的36.6％。分析视野结果,正常组SITA-Fast所得MD值比Full Threshold所得低0.05dB（P>0.05）,PSD低0.12dB（P>0.05）;于可疑青光眼组,SITA-Fast所得MD值比Full Threshald低0.93dB（P<0.01）;PSD低0.31dB（P<0.05）。SITA-Fast阈值程序检查与Full Threshod检查所得平均缺损（MD）具有相关性（r=0.914,P<0.01）;所得图形标准差（PSD）亦具有相关性（r=0.662,P<0.01）。结论:用SITA-Fast阈值程序与传统Full Threshold全阈值程序相比可明显减少视野检查的时间,但因前者所得视野结果在某种程度上低估异常。

Objective: To evaluate the application of SITA-fast strategy in those patients with suspect glaucoma.Methods: 15 normal volunteers (30 eyes) and thirteen patients (18 eyes) with suspect glaucoma were underwent central 30°-2 program with both full threshold and SITA-fast of Humphrey Field Analyzer 750. All subjects were checked twice. A comparison on the examination duration and two visual field indexes (mean damage, MD; and picture standard deviation, PSD) between the two strategies in the second test was performed.Results: The time of examination duration for SITA-fast was about 32.3% of that for full threshold in normal people, and about 36.6% of that for full threshold in patients. Compared with full field threshold, MD of SITA-fast strategy ameliorated by 0.05dB (P>0.05) in normal people and 0. 93dB (P<0.01) in patients, respectively. PSD of SITA-fast strategy was 0.12dB (P>0.05) lower in normal and 0.31dB (P<0.05) lower in the patients than that of full field threshold, respectively. The correlation coefficients (r-value) of MD and PSD between SITA-fast vs full threshold were 0.914 (P<0.01) and 0.662 (P<0.01), respectively.Conclusions: Quantitative comparison showed a high correlation between the two indexes, MD and PSD. SITA-fast strategy reduced the examination time. The results, however, also shown that SITA-fast strategy had a tendency to reduce the visual field defeat, the estimation on the severity of visual field defeat seems to be fallen.