Drops that are strictly mydriatics, with no cycloplegic drug added, like phenylephrine, dilate the eye for several hours. The side effects of pupil dilation are light sensitivity and blurred vision. Headache and pain in the brow can also occur, according to the Mayo Clinic.
What Are CFCs? CFCs are short for the compound, chlorofluorocarbon, which contain carbon, chlorine, and fluorine. Chlorofluorocarbons are more commonly referred to as CFCs or, when used for refrigeration, CFCs are also known as freon. Developed in the 1930s as a safe alternative to ammonia, usage of CFCs grew rapidly because of its usefulness and convenience throughout most of the 20th century.
However, CFCs damage ozone in the ozone layer when they escape into the atmosphere. This allows more ultraviolet radiation to reach the Earthâs surface. When scientists discovered that CFCs damage the ozone layer, they suggested that CFCs should be banned.FCs have some useful properties. For example: they are chemically inert (unreactive). they have a low boiling points (so they turn into gases easily). they are insoluble [insoluble: Unable to dissolve (usually in water).] in water. These properties made CFCs very useful in the past.