A genetic therapy has improved the vision of patients who would otherwise have gone blind.
The therapy involves injecting working copy of the gene into the back of the eyes to help cells regenerate.
A team at Oxford University is treating a rare disorder called Choroideremia.The disorder affects young men whose light-detecting cells in the back of their eyes are dying because they have inherited a faulty gene.
The researchers found that not only does the treatment halt the disease, it revives some of the dying cells and improves the patient’s vision in some cases.

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