TY - JOUR
T1 - Telemedicine-friendly, portable tonometers: an evaluation for intraocular pressure screening
AU - Kumar, S.
AU - Middlemiss, C.
AU - Bulsara, Mahesh
AU - Guibilato, A.
AU - Morgan, William
AU - Tay-Kearney, M.
AU - Constable, Ian
AU - Kanagasingam, Y.
PY - 2006
Y1 - 2006
N2 - Purpose: To evaluate the intraocular pressure (IOP) readings from two portable, telemedicine-friendly tonometers for suitability in glaucoma screening.Methods: 213 eyes of 107 consenting patients attending an eye clinic were tested with an I-care tonometer and a Pulsair-Easy Eye puff-air tonometer. Gold standard IOP was measured with a Goldmann applanation tonometer (GAT). Effect of central corneal thickness, anterior chamber depth and refractive errors on IOP measurements were also analysed.Results: The mean difference of IOP by GAT and both the portable tonometers was +/- 2.2 mmHg. The analysis indicates minimal difference between IOP readings of both the portable tonometers. The mean difference between two consecutive readings by I-care was 0.01 mmHg. Using 21 mmHg as a threshold for suspected glaucoma, both the portable digital tonometers reported a sensitivity of 38% and specificity of > 95%. In the subjects studied, central corneal thickness had statistically significant influence on IOP measurements while refractive errors and anterior chamber depth had no significant influence on IOP measurements with any tonometry.Conclusions: The IOP readings by both portable tonometers are comparable and were within clinically acceptable range from GAT. These portable tonometers are useful tools for IOP screening.
AB - Purpose: To evaluate the intraocular pressure (IOP) readings from two portable, telemedicine-friendly tonometers for suitability in glaucoma screening.Methods: 213 eyes of 107 consenting patients attending an eye clinic were tested with an I-care tonometer and a Pulsair-Easy Eye puff-air tonometer. Gold standard IOP was measured with a Goldmann applanation tonometer (GAT). Effect of central corneal thickness, anterior chamber depth and refractive errors on IOP measurements were also analysed.Results: The mean difference of IOP by GAT and both the portable tonometers was +/- 2.2 mmHg. The analysis indicates minimal difference between IOP readings of both the portable tonometers. The mean difference between two consecutive readings by I-care was 0.01 mmHg. Using 21 mmHg as a threshold for suspected glaucoma, both the portable digital tonometers reported a sensitivity of 38% and specificity of > 95%. In the subjects studied, central corneal thickness had statistically significant influence on IOP measurements while refractive errors and anterior chamber depth had no significant influence on IOP measurements with any tonometry.Conclusions: The IOP readings by both portable tonometers are comparable and were within clinically acceptable range from GAT. These portable tonometers are useful tools for IOP screening.
UR - https://www.scopus.com/pages/publications/33748565924
U2 - 10.1111/j.1442-9071.2006.01304.x
DO - 10.1111/j.1442-9071.2006.01304.x
M3 - Article
C2 - 16970760
SN - 1442-6404
VL - 34
SP - 666
EP - 670
JO - Clinical and Experimental Ophthalmology
JF - Clinical and Experimental Ophthalmology
IS - 7
ER -