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Proceedings Paper

Study of noncontact air-puff applanation tonometry IOP measurement on irregularly-shaped corneas
Author(s): Wai W. Wang; Kuo-Jen Wang; Che-Liang Tsai; I-Jong Wang
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Paper Abstract

Abnormal corneas with corneal tissue defects like ulceration, melting, laceration, thinning scar, keratoconus etc., poses special challenges for ophthalmologist to measure intraocular pressure (IOP) correctly using air-puff noncontact applanation tonometry. Here, we propose an novel model, Abnormal Applanation IOP Model (AAIOP), to simulate IOP in these abnormal corneas on an air-puff noncontact applanation tonometry system, and the simulated IOP results are correctly fit in those of IOP measured database on human eyes of 91,024 patients (174,666 eyes)1). Our simulated IOP indicates that every 10 μm of central corneal thickness change results in 0.36 mmHg of IOP change. Using our simulation model, the IOP on abnormal eyes with irregularly-shaped corneas can be correctly expected and reported.

Paper Details

Date Published: 18 April 2017
PDF: 3 pages
Proc. SPIE 10251, Biomedical Imaging and Sensing Conference, 102511X (18 April 2017); doi: 10.1117/12.2269292
Show Author Affiliations
Wai W. Wang, Crystalvue Medical Corp. (Taiwan)
Kuo-Jen Wang, Crystalvue Medical Corp. (Taiwan)
Che-Liang Tsai, Crystalvue Medical Corp. (Taiwan)
I-Jong Wang, National Taiwan Univ. Hospital (Taiwan)

Published in SPIE Proceedings Vol. 10251:
Biomedical Imaging and Sensing Conference
Toyohiko Yatagai; Yoshihisa Aizu; Osamu Matoba; Yasuhiro Awatsuji, Editor(s)

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