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Scientists developed a portable camera for an eye test instead of irritating drops

 

Clinical courses

Scientists have developed a cheap portable camera that can photograph the retina without administering the dilating pupillary irritating drops. The camera works by first emitting infrared light, iris - the muscle that controls the opening of the pupil - does not react to.

Most retina cameras use white light, which is why pupil dilating drops are needed. Infrared light is used to focus the camera on the retina, which may take a few seconds. Once focused, a quick flash of white light is delivered when the picture is taken.

Made from single pieces mostly available online, the total cost of the camera is about $ 185, said researchers from the University of Illinois in Chicago.

 

"As residents see patients in the hospital, there are often times when we are not allowed to dilate patients - neurosurgery patients for example," said Bailey Shen of UI C. The camera is based on the Raspberry Pi 2 computer, a low cost, onboard computer designed to teach children how to build and program computers. The card connects to a cheap infrared camera and a dual infrared and white light-emitting diode. A handful of other components make up the rest of the camera, the researchers said

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