have peaks which are very close together, working the eye at a much higher rate (2 quadrillion times more operations per second) than that of the warm white (2700K) fluorescent tube. Conversely, light in the red part of the spectrum, tends to allow the retinal cells to operate at a slower rate, often giving them a better chance to keep pace with the disposal of the by-products of photoreception. This then, results in less glare and more opportunity for disposal of waste product.
It is not too harsh to state that virtually all
persons with vision problems should be removed from a light environment where the predominant light waves are at a temperature above 3500K or a wavelength less than approximately 500 nm.
Not only is it uncomfortable for persons with
diseased or damaged eyes, there is adequate information available to safely state that blue light, and also UV, cause irreparable damage, over time, to the human retina, especially in young children. Numerous studies by Dr. Chen of Sweden and Drs. Ham and Ruffolo, suggest it is wavelength alone, not duration or intensity which is responsible for cellular damage and death in the presence of blue light. Serious consideration as to how we light environments of persons with visual problems cannot come too soon.
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