1/3/2023 0 Comments Blue blocks blue light![]() 27–29 However, no study has been conducted on ocular surface protection by light-blocking shades. BLUE BLOCKS BLUE LIGHT SOFTWAREPotential protection of the ocular surface from blue light hazards includes eyewear shields, blocking shades, blue light emission control software and extracts of medicinal plants. One study 11 suggested the clinical implication that blue light may induce oxidative damage in the ocular surface of patients with dry eye disease (DED). 22–26 In contrast, only four studies 8–11 have described phototoxicity and increased oxidative stress in ocular surface tissue and cells irradiated with blue light. 21 Numerous investigations have been conducted on ocular surface cells looking at the effects of ultraviolet (UV) radiation and protection for the cornea and conjunctiva. 13–19 Since the pathophysiology of experimental retinal damage resembles age-related macular degeneration, a serious vision-threatening disease in elderly people, 20 the effects of light shields and intraocular lenses have been evaluated for the purpose of prevention of age-related macular degeneration, 13–17 although clinical evidence is still lacking. ![]() Phototoxicity of blue light against retinal cells has been documented for decades 12 and experimental results have repeatedly indicated its harmfulness to retinal pigment epithelium and photoreceptor cells. 2–5 Additionally, blue light may affect vision and the ocular surface. ![]() 1 2 Improper exposure to artificially emitted blue light (visible light with a wavelength of 400–500 nm) at night has several disadvantages, such as circadian rhythm disorders, sleep disorders, mood disorders, carcinogenesis and many other health problems. The term ‘light pollution’ as a human health-related environmental problem is well known, as light environments have grown at night and have become potentially harmful to health. ![]()
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