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Smart phone application designed to diagnose cataracts.

A team of MIT scientists recently developed the Catra system, which is designed to offer early diagnoses of cataracts by measuring the perceptual impact of forward scattering on the foveal region. When an individual looks through a Catra eyepiece that has been fitted onto a smart phone or other smart device, he or she will sees lines on the screen of the phone. Users are meant to push a button if and when the lines look cloudy. If there are enough cloudy lines when the button is pushed, Catra diagnoses the cataract. Cataracts are commonly discovered with an optometrist's tool called a slit lamp, which costs several thousand dollars. Developing countries often lack such technology as slit lamps and, as a result, cataracts often go undiagnosed. The goal of the Catra system is to provide a low-cost easily accessible tool to encourage the early diagnosis of cataracts. Created by MIT faculty and students Ramesh Raskar, Vitor Pamplona, Erick Passos, Jan Zizka, Manuel M. Oliveira, Everett Lawson, and Estebam Clua, the clip-on Catra eye piece can be obtained by individuals who join the following online discussion group: <>. For more information, contact: Camera Culture Group, MIT Media Lab, 77 Massachusetts Avenue, E14/E15, Cambridge, MA 02139; web site: < ~pamplona/CATRA>.

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Title Annotation:Technology
Publication:Journal of Visual Impairment & Blindness
Article Type:Brief article
Date:Aug 1, 2011
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