Cell Phone Can Diagnosis The Cataracts

Spicy By Spicy, 18th Jul 2011 | Follow this author | RSS Feed
Posted in Wikinut>News>Technology

An inexpensive way to use smart phones to quickly detect early-stage cataracts, the clouding of the eye lens that is the leading cause of blindness worldwide.

Cataracts

There are 250 million people in the world who are blind because of preventable causes. An inexpensive, portable device such as Catra, might help make a serious dent in that number.

Users peer through an eyepiece that slides onto a smart phone or other smart device like an iPod Touch,and they view lines displayed on the screen. When the lines appear cloudy, the user presses a button. In that way, the device scans the lens of the eye to create a map of the cloudy areas, which are produced by proteins clumping together.

Catra

Simulation of a cataract-affected view and its progression over time

Cataracts are the leading cause of blindness worldwide. Existing diagnostic methods require Slit-lamps. Catra is a new solution to detect and quantify cataracts with a compact eye piece attached to a cell phone. With no moving parts and built from off-the-shelf components is well suited for the developing world.

Catra scans the lens section by section. This information is collected by the device creating an attenuation map of the entire lens. This allows individuals to monitor the progression of the severity of the cataract. Maps capture a full point spread function of the lens, allowing to simulate the visual perception of a cataract affected subject over time. Early cataract onset is difficult to diagnose. This is a device for measuring cataracts, which is highly portable and collects quantifiable data to help tackle a global health problem.

Catra Functions

Over all hierarchical method to efficiently measure cataracts. (a) Software automatically scans the lens to check for the presence of cataracts. (b) If a scattering spot is found, the scanning procedure is repeated with the subject’s feedback. (c) By matching the brightness of two alternating paths of light compute an attenuation map. (d) For a high scattering spot, the local contrast-sensitivity test replaces the local PSF measurement. In this case the subject increases the contrast of the displayed pattern up to a point where the letter becomes discernible. (e) Local PSF matching is the most detailed mapping, where the peak and Gaussian spread are measured for each scattering spot. The four maps together summarize the forward scattering effects of cataracts

Several research and local practicing ophthalmologists have been in collaboration with this project, and are enthusiastic about its unique outcomes.

Tags

Blindness, Cataract, Catra, Eye, Ipod, Mobile Phone

Meet the author

author avatar Spicy
Hi friends. very nice to meet all of you.

Share this page

moderator johnnydod moderated this page.
If you have any complaints about this content, please let us know

Comments

author avatar Delicia Powers
20th Jul 2011 (#)

This is amazing information, thank for this article Spicy!

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Delicia.

Reply to this comment

author avatar Carol
20th Jul 2011 (#)

Very interesting article Spicy, well done!

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Carol

Reply to this comment

author avatar Denise O
20th Jul 2011 (#)

This is some great information on detecting early signs of cataracts. What a great device. Thank you for sharing.:)

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Denise.

Reply to this comment

author avatar vpaulose
20th Jul 2011 (#)

Good info. Thank you my dear Spicy.

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Vpaulose.

Reply to this comment

author avatar Buzz
20th Jul 2011 (#)

Fantastic info. What ingenuity!
Thanks for sharing, Spicy.

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Buzz.

Reply to this comment

author avatar Steve Kinsman
20th Jul 2011 (#)

Great article. Amazing information. Thank you Spicy.

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you Steve.

Reply to this comment

author avatar Http://www.bingstore.us
20th Jul 2011 (#)




very good web: === http://www.bingstore.us

The website wholesale for many kinds of fashion shoes, like the nike, jordan, prada, also including the jeans, shirts, bags, hat and the decorations.
All the products are free shipping, and the the price is competitive, and also can accept the paypal payment., After the payment, can ship within short time.

We will give you a discount

WE ACCEPT PYAPAL PAYMENT

YOU MUST NOT MISS IT!!!

=== http://www.bingstore.us

thank you!!!

Believe you will love it.

We have good reputation, fashion products,

come here quickly== http://www.bingstore.us

Opportunity knocks but once

Reply to this comment

author avatar D in The Darling
20th Jul 2011 (#)

Thank for your article. This is really handy. keep them coming my friend.

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you D in the Darling.

Reply to this comment

author avatar Songbird B
21st Jul 2011 (#)

This is a really informative article, Spicy, thank you for a great share..

Reply to this comment

author avatar Spicy
23rd Jul 2011 (#)

Thank you songbird.

Reply to this comment

Add a comment
Username
Can't login?
Password