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New colour seen for the first time by tricking the eyes
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Do we all see red as the same colour? We finally have an answer
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This optical illusion expands as you stare at it - and now we know why
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Health
Why we now think the myopia epidemic can be slowed – or even reversed
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Stem cell transplant gives hope for treating age-related sight loss
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Chemical cocktail could restore sight by regenerating optic nerves
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Technology
Spiral scratches on contact lenses can turn them into multifocals
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Smart glasses that play sounds help people who are blind find objects
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Man who sees upside down provides clues on how we process faces
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People with total colour blindness able to see red after gene therapy
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Smart glasses dim bright objects but don’t affect other things in view
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Ultraviolet camo made from natural plant dyes could help bird hunters
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