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Just like other parts of the body, the retina needs oxygen in order to survive. If it doesn’t receive enough – should its blood supply be restricted, for instance – permanent blindness can result.
The sooner that doctors know if a patient’s retina is receiving insufficient oxygen, the better the chances that they can take action in time. Soon, they may be able to use tiny injectable robots to get them the information they need.
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Researchers have deciphered the neural code used by mouse ganglion cells, and used it to create a prosthesis that reportedly restores normal vision to blind mice.
They have additionally deciphered the neural code of monkeys, which is close to that used by humans, so a device for use by blind people could also be on the way.
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New research supports a largely unrecognized culprit in circadian rhythm disturbances: the gradual yellowing of the lens and the narrowing of the pupil that come with age.
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For some time geneticists have known that stem cells in zebrafish can replace damaged vision cells.
This study showed that cone damage, rather than just rod damage, is possible with these stem cells.
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Researchers have discovered a chemical that makes cells in the retinas of blind mice sensitive to light, temporarily restoring some vision.
They are working on an improved compound that they hope could one day be used to restore sight in human patients suffering from retinitis pigmentosa, the most common form of inherited blindness, and macular degeneration, the most common cause of acquired blindness in the developed world.
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