Eyes: Exercises And UV/Blue Light

Eye Exercises

"So in summary — and you can take this to the bank — eye exercises do not improve your vision, if your problem is nearsightedness, farsightedness, presbyopia, or astigmatism — exactly the set of eye problems that most of us wish we could magically solve. There is no scientific evidence that any eye exercise program will reduce or eliminate the need for glasses."

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UV/Blue Light Effects on Eyes

"All things are good in moderation—this extends to the sun as well. We need some UV exposure to attain certain vitamins like Vitamin D.

"In fact, the body naturally has some mechanisms to protect itself against UV damage—generally speaking the sun is good for us. It’s when we accumulate too much UV exposure overtime, overworking the protective system, that UV light becomes dangerous.

"The body naturally breaks down UV light into non-harmful particles in a physiological process called oxidation.

"However, when the system has too much exposure to UV light, it can no longer keep up with the oxidative process and harmful particles called free radicals begin to build up in human cells, causing irreversible damage.

"A damaged cell here and there may not be problematic, but as more and more cells become damaged and more and more free radicals build up within the body, serious biological changes, like cancer, can occur."

"Blue light, the light emitted from electronic screens such as computers, tablets, smartphones, and TVs, ranges between the upper UVB to lower UVA range. While research is still ongoing when it comes to blue light, it is considered to be a part of UV light family and precautions should be taken." (link)

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" - - - blue light can suppress our natural melatonin production, making it hard to sleep if there is increased screen exposure at night. So while the glasses will not protect you from long-term retina damage, and may not safeguard against eye strain, they can be a useful tool for screen use in the evenings." (link)