Intraocular pressure measurements with the newly reconfigured Ocuton S*TT-MV self-tonometer in comparison to Goldmann applanation tonometry in XXXX @entity1 .

@entity726 @entity1 @entity19194
BACKGROUND: This study compared the new Ocuton S*TT-MV to the Ocuton S (former configuration) and @entity19194 . The effect of the reconfiguration on measuring accuracy and device handling of @entity726 @entity1 was evaluated. MATERIAL/METHODS: 101 @entity726 @entity1 performed self-measurements using the old Ocuton S and the Ocuton S*TT-MV. The new Ocuton S*TT-MV automatically verifies the applanated area. We used @entity19194 as the gold standard reference. Three series of measurements were performed in random order. RESULTS: The mean IOP was 18.3+/-4.2 mmHg with Ocuton S, 17.5+/-3.6 mmHg with the reconfigured Ocuton S*TT-MV, and 15.1+/-3.4 mmHg with @entity19194 . IOP ranged from 9 to 30.5 mmHg with @entity19194 , 7 to 42 mmHg with Ocuton S*TT-MV, and 5 to 38 mmHg with the old Ocuton S. The mean difference between the old Ocuton S and @entity19194 was 3.2+/-3.5 mmHg, between Ocuton S*TT-MV and @entity19194 2.4+/-3.3 mmHg, and between old and new Ocuton S 0.9+/-2.9 mmHg (p<0.01). The standard deviation within an individual row of 4 readings per eye with the old Ocuton S averaged 1.9 mmHg, while with the new Ocuton S*TT-MV the standard deviation averaged 1.7 mmHg. This measuring accuracy showed no age correlation for either self-tonometer (old Ocuton S: coefficient of correlation R=0.2; Ocuton S*TT-MV: coefficient of correlation R=0.053). CONCLUSIONS: The newly reconfigured Ocuton S*TT-MV improves measuring accuracy significantly and approaches the accuracy achieved using @entity19194 . Improved usability of self-tonometers has clinical relevance, as @entity1 don't have to check the corneal cast on the measuring prism. This could lead to an increased usage of self-tonometry in @entity726 monitoring.
