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By Cameron Scott on Jan 26, 2014 07:45 am

In a recent Oxford trial reported in The Lancet, doctors restored sight to patients with choroideremia, a rare inherited cause of blindness that affects about 1 in 50,000 people, with a surgery that involved temporarily detaching the retina to inject mutation-free genes behind it. Of nine patients who underwent the experimental procedure, the two with the most impaired vision could read 2 – 4 additional lines on an eye chart six months later. Four patients whose eyesight was initially only marginally impaired had their night vision improve after treatment.
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