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Abstract #6036 Published in IGR 2-2
Comparative study of pneumotonometer and Goldmann tonometer for screening high intraocular pressure in primary care
Jara Penacoba M; Lopez Traynor A; Duce Tello S; Navas Serrano V; Gonzalez Sanz M; Toledano Fernandez NAtencion Primaria 2000; 25: 493-496
OBJECTIVE: Evaluation of the reliability of measurements of IOP obtained with an air-puff noncontact tonometer compared to those obtained with the conventional Goldmann tonometer. Also, analysis of the possibility of a greater difference between the measurements by both methods regarding being myopic or hypermetropic. DESIGN: A comparative study of two measurement methods. SETTING: A general ophthalmology clinic and primary care clinic in the authors' district. PATIENTS: A sample of patients who visited a general ophthalmology clinic for any cause from May 1st to June 30th, 1996. Patients predisposed for glaucoma were excluded, as well as those who had undergone ocular surgery or those who took drugs which influenced IOP. INTERVENTIONS: The ophthalmologist made three measurements of IOP in each eye and the sight of all patients was tested. The average was taken between every three measurements. A primary care physician took three measurements of IOP in each eye with an air-puff noncontact tonometer, and the average was used. RESULTS: Eighty-one patients were included, of whom seven had high IOP. The sensibility of the air-puff noncontact tonometer, compared to the Goldmann tonometer, was 86% (95% CI, 18.20-99.63%), and the specificity 84% (95% CI, 89.66-78.08%). The air-puff noncontact tonometer obtained measurements between 1.116 and 2.008 mmHg higher than the Goldman tonometer. This difference, of no interest from a clinic point of view, did not show a relationship with being myopic or hypermetropic. A positive lineal association was found between the measurements made by both methods, with a correlation coefficient of 0.8086 (p < 0.001, 95% CI, 0.7476-0.8560). CONCLUSIONS: The results obtained are similar to those of other published series. A tendency for higher measurements with the air-puff noncontact tonometer was observed. A greater difference between both methods in myopes was not observed. The air-puff tonometer is a valid and reliable technique for use in primary care, it is easy to use, does not transmit infectious illnesses, and does not necessitate the use of anesthetics or staining eyedrops. LA: Spanish
Dr. M. Jara Penacoba, Centro de Salud Luengo Rodriguez, Mostoles, Madrid, Spain. julianjp@santandersupernet.com
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
1.6 Prevention and screening (Part of: 1 General aspects)
