The accuracy of Goldmann applanation tonometry over silicone hydrogel contact lenses in patients with glaucoma
Autor: | Rachel S. Cavalcanti, Beatriz de Abreu Fiuza Gomes, Haroldo Vieira de Moraes, Paulo Romeu de Freitas Turiel, Marcony R. Santhiago |
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Rok vydání: | 2014 |
Předmět: |
Adult
Male Intraocular pressure medicine.medical_specialty genetic structures Open angle glaucoma Glaucoma Sensitivity and Specificity Goldmann applanation tonometry Tonometry Ocular Ophthalmology Humans Medicine In patient Bland–Altman plot Intraocular Pressure Aged Aged 80 and over business.industry Reproducibility of Results General Medicine Middle Aged Contact Lenses Hydrophilic medicine.disease eye diseases Confidence interval Contact lens Treatment Outcome Female sense organs Artifacts business Glaucoma Open-Angle Optometry |
Zdroj: | Contact Lens and Anterior Eye. 37:297-299 |
ISSN: | 1367-0484 |
DOI: | 10.1016/j.clae.2014.04.003 |
Popis: | Purpose To investigate the accuracy of measuring intraocular pressure over a silicone hydrogel contact lens using Goldmann applanation tonometry in eyes with glaucoma. Methods This was a prospective, randomized study and enrolled 28 patients (28 right eyes) with primary open angle glaucoma. Intraocular pressure was taken with and without a silicone hydrogel contact lens (−0.50 D), in situ (using Goldmann applanation tonometry), in a randomized order of measurements. Statistical analysis was performed using paired t -test and Bland–Altman plot. Results The mean difference (± standard deviation) found between intraocular pressure measurement without (mean 16.7±3.2mmHg) and with (mean 17.3±3.0mmHg) contact lens was found to be −0.57±2.3mmHg (95% confidence interval, −1.5 to 0.3). No significant statistical difference was found between the two groups with paired t -test ( p =0.19). The Bland Altman plot showed some evidence of increasing variability of differences between two measures of intraocular pressure, with increasing intraocular pressure. The 95% limits of agreement of the Bland Altman plot were unacceptably large (−5mmHg to 3.9mmHg). Conclusion Agreement between Goldmann applanation tonometry with and without contact lenses seems to be poor in patients with glaucoma, especially for high intraocular pressure. |
Databáze: | OpenAIRE |
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