The researchers used the Orcam My Eye for their study. The device is unique because it clips to glasses, making it hands-free. It features a miniature camera that sees and recognizes what the user is viewing, whether text or a face, and then reads what it is seeing to the user via a small bone-conduction earpiece. The user activates the device by simply pointing a finger to the object or text, tapping it or pressing a trigger button.
Researchers tested the device on 12 legally blind people, who all had a visual acuity of less than 20/200. Study participants performed a 10-item test simulating activities of daily life, including recognizing products and reading a variety of items such as emails, letters, newspapers, book and signs. They earned one point for the successful completion of each item, and a zero for each not completed. The total possible score was 10. The researchers studied the participants at three stages. First, they observed the participants doing the tasks without the device, then while wearing it after receiving a 90- to 120-minute training session and finally after wearing the device for one week.
The researchers' findings were as follows:
"While there have been many advances in eye care, the options for assistance in completing daily tasks are limited and cumbersome," said Elad Moisseiev, M.D., a vitreoretinal surgeon who was the study lead at U.C. Davis, but is now with the Tel Aviv Medical Center, Israel. "This represents a new step in the evolution of assistance devices for people with low vision, giving them hope for improving their functionality, independence and quality of life."
The pilot study was the first to evaluate the device in people with low vision, establishing its efficacy and ease of use and demonstrating the achievement of statistically significant differences in test scores, said Dr. Moisseiev. He noted that additional studies should include more people, ideally stratifying them by level of visual impairment.
A Portable Artificial Vision Device is a Useful Aid for Patients with Low Vision was presented at AAO 2016, the 120th annual meeting of the American Academy of Ophthalmology. The event was held in conjunction with the Asia-Pacific Academy of Ophthalmology Oct. 14-18 at McCormick Place, Chicago. Known as the place "Where all of Ophthalmology Meets®," the Academy's annual meeting is the world's largest conference for eye physicians and surgeons.
1 - www.who.int/mediacentre/factsheets/fs282/en/
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