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Hemeralopia or day blindness is the inability to see clearly in bright light and is the exact opposite of nyctalopia (night blindness), the inability to see clearly in low light. [1] It is also called heliophobia. [2] It can be described as insufficient adaptation to bright light.
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 has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.
Some people find it irritating to the stomach, or keep you up at night. And people with atrial fibrillation — a heart arrhythmia condition — should avoid coffee altogether. For people who ...
A new study found that light to moderate drinking is associated with increased cancer- and disease-related mortality in older adults. The findings corroborate mounting evidence showing the harmful ...
Scientists have used a food coloring dye used in Doritos and other products to create mice with see-through skin, a low-cost way to assess the body's internal operations. Before you start ...
In another nearby village, she provides healing potions to the villagers there too to allow recovery. The village chief shows them a hint on where the epidemic's source is coming from, leading to a foggy area where Kaoru uses some hi-tech glasses to help find their way, where they also discover red-eyed animals infected by the epidemic.
Not really. "Some people need glasses when they're young—before 45," explains , of Cleveland Clinic’s Cole Eye Institute. "If you don't need glasses before your 40s, chances are you will need ...