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Although the "flicker" phenomenon usually refers to a very slight difference in contrast brightness and usually is undetectable to the human eye, flicker originating from LED, illuminating devices, televisions, or monitors which require long-term exposure during normal use are considered harmful to the human eye. In the past, flicker-free was the standard consideration for 3D monitors, but the market now is turning to 2D monitors, with those that exhibit the flicker phenomenon considered inferior products and incapable of high-definition presentation.
In addition, it is generally thought that long-term exposure to blue-light environments may cause macular degeneration and be harmful effect to the human eye. Therefore, the market is developing low blue-light products safer for users, especially for gamers, who must concentrate on screens for long periods. "Low blue-light designs can reduce stress to the human eye, but may result in the distortion of color richness.
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