Infrared heat may be a hot new trend in grilling, but this type of heat has been occurring naturally since the dawn of time. In fact, everything with a temperature above absolute zero (which is equal to -459.67 degrees Fahrenheit or -273.15 degrees Celsius) emits at least a little infrared radiation.
For example, bacterial and viral causes of pinkeye are almost always contagious and are spread from person to person. However, pinkeye caused by allergens and chemical irritants is not contagious by person-to-person contact. Pinkeye that is contagious has an incubation period as long as 14 days. However, most doctors do not think that pinkeye becomes contagious to other people until symptoms start to develop.
Most cases of pinkeye clear up within one to two weeks. The duration of pinkeye may be extended if the infection spreads from one eye to the other. Use disposable tissues to remove any mucus from the eye and avoid touching the eye with your fingers to prevent spreading the infection.acterial conjunctivitis is caused by a bacterial infection and requires treatment consisting of medicated eye drops to clear the infection. Viral conjunctivitis is caused by a virus. The symptoms will usually go away within 7-10 days, when the virus has run its course.