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.
Conjunctivitis or pink eye is an eye condition that is characterized by the inflammation of the conjunctiva or the inner surface of the eyelids and the outermost layer of the eye. In some instances, it may be caused by viruses or bacteria, which make it contagious for several days or weeks. The length of time that your pink eye is contagious would vary depending on what actually caused the condition. If your conjunctivitis is due to the rubeola virus that also causes measles, then your condition is extremely contagious which can last for two weeks or even more. 1  Facebook Like.