Mayo Clinic offers an option called retinal prosthesis, which may help some people with severe vision loss or blindness owing to retinal disease. Mayo Clinic physicians conduct retinal disease research and share knowledge to help advance care for people everywhere. Mayo Clinic's research activities include national studies that investigate innovative ways to preserve, rejuvenate and restore vision. You may have the opportunity to participate in clinical trials. Allen Zderad: Yeah, I want to walk through the center of the door without any assistance.
Dennis Douda: The next step Allen Zderad takes will be one of the greatest strides forward in his life. Raymond Iezzi, Jr. Zderad has a condition called retinitis pigmentosa. It's an inherited disease that involves the degeneration of a cell type in the retina called photoreceptors.
Dennis Douda: Mayo Clinic ophthalmologist and retinal surgeon Raymond Iezzi has made it his life's mission to try to restore vision … even artificial vision … for people like Allen.
Raymond Iezzi: The retina in these patients is relatively healthy except for the photoreceptors and so what we're trying to do is replace the function of these lost photoreceptors with the retinal prosthesis. Dennis Douda: The prosthesis is basically a bionic eye. While decades of research have convinced Dr. Iezzi it's possible, this next moment convinces him that it's also essential. Dennis Douda: With family members in tears, Allen is given his first glimpse of his wife Carmen in more than years.
Dennis Douda: While the bionic system's interpretation of what Allen looks at may seem rough and pixilated to others, for Allen it is literally an eye-opening revelation. Allen Zderad: Oh, okay, it's going to take, yes, interpretation of the shape of the light that's flashing. Because, it's a pulsing light. It's not like regular vision where it's constant. It's the flash and I've gotta be able to interpret the changes and shape. Let's do it again, okay? I picked you up!
You know, it'll work. Dennis Douda: Allen knew his restored vision would be limited. Raymond Iezzi: These small flashes of light are sort of like the points of light on a scoreboard at a baseball game. Dennis Douda: To try to imagine how it might look to Allen, Dr. Iezzi says to picture contrasting light and dark blocks on a grid. Raymond Iezzi: But by moving his head and using his visual memory and all of his cognitive skills and his remarkable capacity to get around, Mr.
Zderad can reconstruct a scene. Dennis Douda: How it works is a bio-engineering marvel, starting with the half-centimeter-wide electronic strip Dr.
Iezzi placed inside Allen's eye. Morton F. Goldberg, M. Amir Hossein Kashani, M. Tin Yan Alvin Liu, M. Mira Menon Sachdeva, M. Adrienne Williams Scott, M. Mandeep Singh, M.
Akrit Singh Sodhi, M. Sharon Denise Solomon, M. Katharine M. Graham Professor of Ophthalmology Professor of Ophthalmology. Adam Scott Wenick, M. Andrew Rising Carey, M. Haller, MD, said in the release. For a complete list of the national rankings in all specialties, go to health. Healio News Ophthalmology Practice Management. Read next. August 14, Receive an email when new articles are posted on.
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