CATRA: Cataract Maps with Snap-on Eyepiece for Mobile Phones

http://EyeCatra.com http://EyeNetra.com

Camera Culture Group - MIT Media Lab

We measure cataracts in the human eye by crafting an optical solution on top of a mobile phone. The human subject looks through the eye piece and answers questions about peceived images. The key idea is that we can ask the subject to compare the sequence of images we show and these images are modified by the forward scatter of the cataract and sensed in the retina's 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 local 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. The compiled maps are used to reconstruct the cataract-affected view of an individual, offering a unique approach for capturing information for screening, diagnostic, and clinical analysis.

Category:

Science & Technology

Tags:

• cataract
• mit
• medialab
• catra
• netra
• eyecatra
• eyenetra

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