The atomic mass (m a) is the mass of an atom. Its unit is the unified atomic mass units (symbol: u, or Da) where 1 unified atomic mass unit is defined as 1 â 12 of the mass of a single carbon-12 atom, at rest.
The treatment for pinkeye depends on the cause. 1  Bacteria. Pinkeye caused by bacteria, including those related to STDs, is treated with antibiotics, in the form of eye drops, ointments, or pills. 2  Viruses. This type of pinkeye often results from the viruses that cause a common cold. 3  Irritants.
For pinkeye caused by an irritating substance, use water to wash the substance from the eye for five minutes. Your eyes should begin to improve within four hours. If the conjunctivitis is caused by acid or alkaline material such as bleach, immediately rinse the eyes with lots of water and call your doctor immediately.