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Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which in artificial narrowband form has a number of proven negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related ...
Blue light is absorbed by the lens, preventing blue light from reaching the retina at the back of the eye. [12] To prevent retinal damage, the lens has to lower transparency. [ 9 ] This reaction causes visual impairment and the development of cataracts , [ 13 ] [ 14 ] a cloudy region in the lens.
The various cone cells are maximally sensitive to either short wavelengths (blue light), medium wavelengths (green light), or long wavelengths (red light). Rod photoreceptors only contain one type of photopigment, rhodopsin, which has a peak sensitivity at a wavelength of approximately 500 nanometers which corresponds to blue-green light. [ 6 ]
Reduced Light Exposure: Avoiding bright or artificial lighting can help manage symptoms. Visual adaptation exercises may also provide relief. [9] There are no specific pharmacological treatments or surgical interventions for cyanopsia. However, research on post-surgical blue-light filtering and selective blue-light blocking medications shows ...
An animated sequence of simulated appearances of a red flower (of a zonal geranium) and background foliage under photopic, mesopic, and scotopic conditions. The Purkinje effect or Purkinje phenomenon (Czech: [ˈpurkɪɲɛ] ⓘ; sometimes called the Purkinje shift, often pronounced / p ər ˈ k ɪ n dʒ i /) [1] is the tendency for the peak luminance sensitivity of the eye to shift toward the ...
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Blue light phototherapy, light therapy involving a medical device that radiates blue light; Cobalt blue light, a type of light used by slit lamps to help in the diagnosis of eye diseases; Effects of blue light technology; Blue Lanterns (disambiguation) Bluelight (disambiguation)
President Donald Trump was poised to impose 25% taxes on imports from Canada and Mexico Tuesday and to double to 20% his levies on Chinese products. All three countries — America's top trading ...
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