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.
It is the atomic chlorine that does the damage, since it can react with ozone (O 3) to form oxygen. The Cl atom is regenerated in this reaction, and so the breakup of only one CFC molecule can initiate the subsequent removal of thousands of ozone molecules.he chlorofluorocarbons (or CFCs for short) have recently received a great deal of attention, and notoriety, as a result of being implicated in the destruction of the ozone layer.