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Proceedings Paper

Cost-effective instrumentation for quantitative depth measurement of optic nerve head using stereo fundus image pair and image cross correlation techniques
Author(s): Luis Alberto Viera de Carvalho; Valeria Carvalho
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Paper Abstract

One of the main problems with glaucoma throughout the world is that there are typically no symptoms in the early stages. Many people who have the disease do not know they have it and by the time one finds out, the disease is usually in an advanced stage. Most retinal cameras available in the market today use sophisticated optics and have several other features/capabilities (wide-angle optics, red-free and angiography filters, etc) that make them expensive for the general practice or for screening purposes. Therefore, it is important to develop instrumentation that is fast, effective and economic, in order to reach the mass public in the general eye-care centers. In this work, we have constructed the hardware and software of a cost-effective and non-mydriatic prototype device that allows fast capturing and plotting of high-resolution quantitative 3D images and videos of the optical disc head and neighboring region (30° of field of view). The main application of this device is for glaucoma screening, although it may also be useful for the diagnosis of other pathologies related to the optic nerve.

Paper Details

Date Published: 28 February 2014
PDF: 6 pages
Proc. SPIE 8930, Ophthalmic Technologies XXIV, 89301C (28 February 2014); doi: 10.1117/12.2035727
Show Author Affiliations
Luis Alberto Viera de Carvalho, Wavetek Technologies USA (United States)
Univ. de São Paulo (Brazil)
Univ. Federal de São Paulo (Brazil)
Valeria Carvalho, Wavetek Technologies USA (United States)
Univ. de São Paulo (Brazil)
Univ. Federal de São Carlos (Brazil)

Published in SPIE Proceedings Vol. 8930:
Ophthalmic Technologies XXIV
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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