advertisement
Abstract #75363 Published in IGR 19-2
Reliability and reproducibility of introcular pressure (IOP) measurement with the Icare Home rebound tonometer (model TA022) and comparison with Goldmann applanation tonometer in glaucoma patients
Valero B; Fénolland JR; Rosenberg R; Sendon D; Mesnard C; Sigaux M; Giraud JM; Renard JPJournal Français d'Ophtalmologie 2017; 40: 865-875
PURPOSE: The Icare Home tonometer is a new rebound tonometer, developed for intraocular pressure (IOP) self-monitoring. The main objective of our study was to evaluate the reliability and reproducibility of measurements taken with the Icare Home tonometer in glaucoma patients compared to the Goldmann applanation tonometer. A secondary objective was to investigate factors that could influence the reproducibility of these measurements. MATERIALS AND METHODS: Fifty-two glaucoma patients were included in this prospective, non-randomized, monocentric study. IOP measurements were performed on the right eye and then on the left eye in the following order (3 measurements of IOP for each method): air tonometer (T-Air), Icare Home tonometer by the patient (RT-P), Icare Home tonometer by an ophthalmologist (RT-O), Goldmann applanation tonometer (GAT). RESULTS: Forty-four patients (85%) managed to take their IOP on both eyes with the Icare Home tonometer. Mean IOPs were 14.35±3.93mmHg (T-Air), 13.43±4.65mmHg (RT-P), 14.13±4.29mmHg (RT-O), 14.74±3.84mmHg (GAT). The intraclass correlation indices (ICC) on the 3 repeated IOP measurements were 0.924, 0.872, 0.947 and 0.957, respectively. Bland-Altman analysis found a mean difference (bias) between GAT and RT-P, between GAT and RT-O, and between RT-O and RT-P, respectively, of 1.31, 0.61 and 0.70mmHg, with a 95% confidence interval of -3.34 to 5.96, -3.91 to 5.14 and -3.44 to 4.84mmHg, respectively. The reproducibility of the measurements taken with the Icare Home tonometer did not vary according to corneal thickness or age of the patients. CONCLUSION: The Icare Home tonometer provides reliable and reproducible IOP values in glaucoma patients, although it appears to slightly underestimate the IOP measurements compared to the Goldmann applanation tonometer.
Hôpital d'instruction des armées Sainte-Anne, boulevard Sainte-Anne, 83800, Toulon, France. Electronic address: bernardvalero@yahoo.fr.
Full articleClassification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)