目的：分析疑似青光眼患者24h眼压的变化规律。

方法：收集疑似青光眼患者48例96眼，使用Accupen手持眼压计(24-3000)和NCT非接触眼压计(CT-80)测量24h眼压，自7：30开始，每2h测一次眼压，共12次，其中7：30～21：30测量坐位眼压，23：30～5：30测量坐位及卧位眼压。

结果：两种眼压计测量的传统体位下24h眼压峰值均出现在7：30，非接触眼压计测得的结果为22.05±3.608mmHg，手持式眼压计测得的结果为19.79±4.147mmHg。手持眼压计测得习惯性体位下眼内压峰值出现在5：30，平均21.64±4.814mmHg，且两种体位24h眼内压谷值均出现在21：30，谷值眼内压平均值为15.73±3.649mmHg。两种体位均呈夜间眼压逐渐升高，白天眼压逐渐下降的趋势。

结论：疑似青光眼患者眼内压峰值多出现在清晨，夜间卧位眼压值较坐位眼压值高。

METHODS: Totally 48 suspected glaucoma(96 eyes)were selected for 24-hour IOP monitoring by using Accupen tonometer(24-3000)and non-contact tonometer(NCT, CT-80A)from 9:30 to 7:30 next day(once in 2h). During 07:30 to 21:30, patients were measured in sitting position, while during 23:30 to 05:30 in both sitting and supine position.

RESULTS: A morning peak of IOP was shown at 7:30 in traditional position by using two measures with 22.05±3.608mmHg of NCT and 19.79±4.147mmHg of Accupen tonometer. The peak IOP in habitual position appeared in 5:30 with 21.64±4.814mmHg. The lowest IOP occurred in both position at 21:30 with 15.73±3.649mmHg. Both positions showed IOP trend of going up at night and then declining in the morning.

CONCLUSION: The peak IOP in suspected glaucoma occurs mostly at early morning. Supine IOP of sleeping time is higher than that of sitting position.