19 October 2009
Intraocular pressure measurements with the newly reconfigured Ocuton S*TT-MV self-tonometer in comparison to Goldmann applanation tonometry in glaucoma patients
Elena LanfermannBCDEF, Clemens JürgensCDE, Rico GroßjohannCDE, Susanna AntalAB, Frank TostACDEFGMed Sci Monit 2009; 15(11): CR556-562 :: ID: 878239
Abstract
Background
This study compared the new Ocuton S*TT-MV to the Ocuton S (former configuration) and GAT. The effect of the reconfiguration on measuring accuracy and device handling of glaucoma patients was evaluated.
Material and Method
101 glaucoma patients 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 GAT 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 GAT. IOP ranged from 9 to 30.5 mmHg with GAT, 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 GAT was 3.2+/-3.5 mmHg, between Ocuton S*TT-MV and GAT 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 GAT. Improved usability of self-tonometers has clinical relevance, as patients don't have to check the corneal cast on the measuring prism. This could lead to an increased usage of self-tonometry in glaucoma monitoring.
Keywords: Intraocular Pressure - physiology, Glaucoma - physiopathology, Cornea - pathology, Astigmatism, Age Distribution, Self Care, Tonometry, Ocular - instrumentation
Editorial
01 March 2024 : Editorial
Editorial: First Regulatory Approvals for CRISPR-Cas9 Therapeutic Gene Editing for Sickle Cell Disease and Transfusion-Dependent β-ThalassemiaDOI: 10.12659/MSM.944204
Med Sci Monit 2024; 30:e944204
In Press
21 Feb 2024 : Clinical Research
Potential Value of HSP90α in Prognosis of Triple-Negative Breast CancerMed Sci Monit In Press; DOI: 10.12659/MSM.943049
22 Feb 2024 : Review article
Differentiation of Native Vertebral Osteomyelitis: A Comprehensive Review of Imaging Techniques and Future ...Med Sci Monit In Press; DOI: 10.12659/MSM.943168
23 Feb 2024 : Clinical Research
A Study of 60 Patients with Low Back Pain to Compare Outcomes Following Magnetotherapy, Ultrasound, Laser, ...Med Sci Monit In Press; DOI: 10.12659/MSM.943732
26 Feb 2024 : Clinical Research
Predictive Value of Combined HbA1c and Neutrophil-to-Lymphocyte Ratio for Diabetic Peripheral Neuropathy in...Med Sci Monit In Press; DOI: 10.12659/MSM.942509
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952