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You can't give accurate values to the exact level of brightness needed for optimal reading. There are several factors that affect such things such as type of display, ambient light, type of work, program you are working with. If the brightness is reduced to a minimum, it forces the eyes to exert more strain which would damage the eye as excessive eye strain ...


2

I think it depends on the brightness of other light in the room. To reduce eye strain you should try to keep your screen at a similar light intensity compared to the rest of the light in the room. A particular study showed that eye strain was increased when watching a bright screen in a dark room. "The result of all this testing and observation was that ...


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To answer this question as to why some 35% of people may experience the photic sneeze reflex requires knowledge of how the photic reflex occurs and its function, and both are currently unknown. It may be a neutral trait, or it may even have some evolutionary advantage. It's known now that simulating a sneeze by passing fast moving air over nasal cilia ...


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