RESUMO
AIM: To analyze the value of 24 - hour intraocular pressure ( IOP) monitoring in suspected glaucoma patients. 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士3 608mmHg of NCT and 19.79士4.147mmHg of Accupen tonometer. The peak IOP in habitual position appeared in 5 30 with 21.64士4.814mmHg. The lowest IOP occurred in both position at 21 30 with 15. 73士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.