Wednesday, October 5, 2011

Addressing Blindness via Cell Phones - SDM Pulse, Fall 2011


Prototype phone with
EyeCatra device attached
and results shown on screen.


Problem statement: According to the World Health Organization, cataracts are the leading cause of blindness in mid- and low income countries. India has the largest number of blind people globally—15 million—yet there is only one doctor for every 100,000 people, leaving the majority of cataract cases undetected.
Goal: To improve early cataract detection and free up the limited number of ophthalmologists to concentrate on surgery.
Solution: EyeCatra, a portable self-evaluation eye diagnostic tool that attaches to a cell phone and uses a light-scattering technique to scan and map the eye for cataracts. It can be used in rural homes, schools, pharmacies, and health clinics.
SDM contribution: SDM ’11 students Vivin Nath, Nirmalya Banerjee, and Rupreet Singh Soni are part of the EyeCatra team.
This cell phone display shows two maps of a patient's eye created
by an EyeCatra scan. The first is an opacity map that shows
binary information (does or does not have) regarding cataracts
for each section of the lens. The second is an attenuation map
created by measuring the brightness of two alternating
paths of light through the lens.

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