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Vision Restored: The Latest Technologies to Improve Sight

Cell implants, gene therapy, even optogenetics are making headway in clinical trials to treat various forms of blindness.  

Written byAnna Azvolinsky
| 6 min read

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ISTOCK, BATKEIn recent years, scientists have accomplished what previously was saved for miracle workers: they have given blind patients the ability to see better. In 2017, the vision field saw an enormous advance with the approval Luxturna, the first gene therapy to correct vision loss in certain patients with childhood onset blindness.

And just last week, researchers reported that a retinal implant allowed a 69-year-old woman with macular degeneration to more than double the number of letters she could identify on a vision chart.

“It’s early data but very promising, including one patient with impressive vision gains, for a disease where we don’t have any treatment options,” says Thomas Albini of the University of Miami’s Bascom Palmer Eye Institute who was not involved in the study.

What we have is a replica of the cells that are missing, due to degeneration.—Amir Kashani,
University of Southern California

The implant, given to five patients with dry age-related macular degeneration (AMD), is a single sheet of retinal pigment epithelial (RPE) cells derived from human embryonic stem cells. Other teams across ...

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Meet the Author

  • head shot of blond woman wearing glasses

    Anna Azvolinsky received a PhD in molecular biology in November 2008 from Princeton University. Her graduate research focused on a genome-wide analyses of genomic integrity and DNA replication. She did a one-year post-doctoral fellowship at Memorial Sloan Kettering Cancer Center in New York City and then left academia to pursue science writing. She has been a freelance science writer since 2012, based in New York City.

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