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Treating colour blindness with gene therapy shifts long held beliefs.

Recent research has demonstrated that colour blindness may be capable of rescue by a simple sub-retinal injection of the genetic sequence for the missing photopigment. A research team, based at the University of Washington, have comprehensively shown that animals, previously documented to be colour-blind, are capable of colour discrimination within 20 weeks of treatment. The research not only adds optimism to the field of gene therapy for many other retinal disorders but also suggests an encouraging level of plasticity in how the brain manages new information.