Tag Archives | Eyesight

Bionic Lens Will Give You Superhuman Vision (3 x 20/20)

How would you like to have superhuman vision? What’s that mean, you may well ask: how about 3 x 20/20, which is generally considered to be “perfect” vision. CBC reports on the Ocumetics Bionic Lens:

Imagine being able to see three times better than 20/20 vision without wearing glasses or contacts — even at age 100 or more — with the help of bionic lenses implanted in your eyes.

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Photo: Chilledsunshine (CC)

 

Dr. Garth Webb, an optometrist in British Columbia who invented the Ocumetics Bionic Lens, says patients would have perfect vision and that driving glasses, progressive lenses and contact lenses would become a dim memory as the eye-care industry is transformed.

Webb says people who have the specialized lenses surgically inserted would never get cataracts because their natural lenses, which decay over time, would have been replaced.

Perfect eyesight would result “no matter how crummy your eyes are,” Webb says, adding the Bionic Lens would be an option for someone who depends on corrective lenses and is over about age 25, when the eye structures are fully developed.

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Boy’s Eyes Glow In The Dark, See In Night Vision

Is he a "starchild"? Part-alien DNA seems like the most rational explanation for this:
A boy has stunned medics with his ability to see in pitch black with eyes that glow in the dark. Doctors have studied Nong Youhui's amazing eyesight since his dad took him to hospital in Dahua, southern China, concerned over his bright blue eyes. Dad Ling said: "They told me he would grow out of it and that his eyes would stop glowing and turn black like most Chinese people but they never did." Medical tests conducted in complete darkness show Youhui can read perfectly without any light and sees as clearly as most people do during the day.
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First Eyeball Grown From Stem Cells

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Photo: Danny Hope (CC)

The Guardian reports:

Scientists have used stem cells to grow a rudimentary eye in the laboratory in a landmark study that raises the prospect of creating tissues to treat blindness and tease apart how diseases can destroy eyesight.

The Japanese team is the first to make significant progress in turning embryonic stem cells into an organ as complex as the eye.

Writing in the journal Nature, the scientists describe how they used embryonic stem cells from mice to grow an “optic cup”, a structure that forms the retina and contains the light-sensitive cells and neurons needed to see properly.

The work gives researchers hope for growing parts of the human eye to investigate the progression of devastating diseases that lead to blindness, and to screen for drugs that might slow or even reverse the conditions.

It also raises the more distant prospect of creating banks of healthy retina cells to transplant into patients whose vision has been damaged by illness or accidents.

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