![]() Which Color/Wavelength of Light is Beneficial for eyes? Note that the green cones can detect light in the orange/red range. Graph showing the wavelength perception range of the light sensitive cells in the human eye. Research in the area has increased significantly in the last 10 years. All of the cells receive benefits from some other types of light. Some of these cells (and tissues) are vulnerable to some types of light. We have rod cells to detect light intensity, cone cells to detect colour, various epithelial cells, humor producing cells, collagen producing cells, etc. 1 Like elsewhere on the body, eyes are made up of cells, specialised cells, all performing unique functions. It has recently been proven that the eye can detect a single photon. We do not have the hardware to perceive near infrared light (as used in infrared light therapy), just as we do not perceive other wavelengths of EM radiation such as UV, Microwaves, etc. Chart showing the human eye’s perception range, within the broader electromagnetic (EM) spectrum They can also detect light between the wavelengths of 400nm and 700nm. Human eyes are especially sensitive to light, being able to differentiate between up to 10 million individual colours. Visual perception is a key part of our conscious experience, and something so integral to our day-to-day functioning. Is there anything to be worried about? Can red light damage the eyes? or can it actually be very beneficial and help to heal our eyes? ContentsĮyes are perhaps the most vulnerable and precious parts of our bodies. People want to use red lights on the skin of the face, but are worried that bright red light pointed there may not be optimal for their eyes. ![]() One of the most common concerns with red light therapy is the eye area.
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