Telemedicine-friendly, portable tonometers

An evaluation for intraocular pressure screening

Sajeesh Kumar Kamala Raghavan, Catherine Middlemiss, Max Bulsara, Antonio Guibilato, William Morgan, Mei Ling Tay-Kearney, Ian J. Constable, Kanagasingam Yogesan

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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 0.01mmHg. 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. Conclusion: 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.

Original languageEnglish (US)
Pages (from-to)666-670
Number of pages5
JournalClinical and Experimental Ophthalmology
Volume34
Issue number7
DOIs
StatePublished - Sep 1 2006
Externally publishedYes

Fingerprint

Telemedicine
Intraocular Pressure
Reading
Refractive Errors
Anterior Chamber
Glaucoma
Manometry
Air
Sensitivity and Specificity

All Science Journal Classification (ASJC) codes

  • Ophthalmology

Cite this

Telemedicine-friendly, portable tonometers : An evaluation for intraocular pressure screening. / Kamala Raghavan, Sajeesh Kumar; Middlemiss, Catherine; Bulsara, Max; Guibilato, Antonio; Morgan, William; Tay-Kearney, Mei Ling; Constable, Ian J.; Yogesan, Kanagasingam.

In: Clinical and Experimental Ophthalmology, Vol. 34, No. 7, 01.09.2006, p. 666-670.

Research output: Contribution to journalArticle

Kamala Raghavan, SK, Middlemiss, C, Bulsara, M, Guibilato, A, Morgan, W, Tay-Kearney, ML, Constable, IJ & Yogesan, K 2006, 'Telemedicine-friendly, portable tonometers: An evaluation for intraocular pressure screening', Clinical and Experimental Ophthalmology, vol. 34, no. 7, pp. 666-670. https://doi.org/10.1111/j.1442-9071.2006.01304.x
Kamala Raghavan, Sajeesh Kumar ; Middlemiss, Catherine ; Bulsara, Max ; Guibilato, Antonio ; Morgan, William ; Tay-Kearney, Mei Ling ; Constable, Ian J. ; Yogesan, Kanagasingam. / Telemedicine-friendly, portable tonometers : An evaluation for intraocular pressure screening. In: Clinical and Experimental Ophthalmology. 2006 ; Vol. 34, No. 7. pp. 666-670.
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