Can we create a device that makes people aware of their early cataract condition?
CATRA: interactive measuring and modeling of cataracts
Vitor F. Pamplona1

Erick B. Passos3

Jan Zizka4

Manuel M. Oliveira1

Everett Lawson2

Esteban Clua3

Ramesh Raskar2

Instituto de Informática, UFRGS       MIT Media Lab      UFF Media Lab       Comenius University DAI

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ACM Transactions on Graphics.
Volume 30 (4) 2011, pp. 47:1-8. Proceedings of SIGGRAPH 2011. [DOI]


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Abstract Downloads Reference Acknowledgments

Abstract

We introduce an interactive method to assess cataracts in the human eye by crafting an optical solution that measures the perceptual impact of forward scattering on the foveal region. Current solutions rely on highly-trained clinicians to check the back scattering in the crystallin lens and test their predictions on visual acuity tests. Close-range parallax barriers create collimated beams of light to scan through sub-apertures, scattering light as it strikes a cataract. User feedback generates maps for opacity, attenuation, contrast and sub-aperture point-spread functions. The goal is to allow a general audience to operate a portable high-contrast light-field display to gain a meaningful understanding of their own visual conditions. User evaluations and validation with modified camera optics are performed. Compiled data is used to reconstruct the individual's cataract-affected view, offering a novel approach for capturing information for screening, diagnostic, and clinical analysis.

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ACM Copyright Notice: © ACM, 2011. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM TOG, Vol. 30, 4, July 2011 — http://doi.acm.org/10.1145/1964921.1964942.

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CATRA: Interactive Measuring and Modelling of Cataracts.

Reference

Citation

Pamplona, Vitor F. and Passos, Erick B. and Zizka, Jan and Oliveira, Manuel M. and Lawson, Everett and Clua, Esteban and Raskar, Ramesh "CATRA: interactive measuring and modeling of cataracts"ACM Transactions on Graphics. Volume 30 (2011),  Proceedings of SIGGRAPH 2011., pp. 47:1-47:8.

BibTeX

@article{Pamplona:2011:CIM:2010324.1964942,
author = {Pamplona, Vitor F. and Passos, Erick B. and Zizka, Jan and Oliveira, Manuel M. and Lawson, Everett and Clua, Esteban and Raskar, Ramesh},
title = {CATRA: interactive measuring and modeling of cataracts},
journal = {ACM Trans. Graph.},
issue_date = {July 2011},
volume = {30},
issue = {4},
month = {August},
year = {2011},
issn = {0730-0301},
pages = {47:1--47:8},
articleno = {47},
}

Keywords

Cataracts, Computer-human Interaction, Light fields.

Acknowledgments

CNPq-Brazil fellowships and grants 142563/2008- 0, 200763/2009-1, 200284/2009-6, 308936/2010-8, 480485/2010-0.