Retinal implant restores partial sight to blind people

Some previously blind patients fitted with retinal implant could read signs, tell the time and distinguish white wine from redBlind people have described smiles on friendly faces, the food on their plates, and household objects from telephones to dustbins, after surgeons fitted them with electronic chips to partially restore their vision.Results from the first eight patients to enrol in a clinical trial of the retinal implants show that five found the chips improved their eyesight enough to be useful in everyday life.All those involved – men and women aged 35 to 62 – had lost their sight to retinitis pigmentosa, a hereditary disease that destroys the light-sensitive cells in the eye. The chip stands in for the defunct cells by detecting light rays and converting them into electrical pu…