axiom. 1  a self-evident truth that requires no proof. 2  a universally accepted principle or rule. 3  Logic, Mathematics. a proposition that is assumed without proof for the sake of studying the consequences that follow from it.
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Most OTC lubricating eye drops work by adding various tear elements that are in your eyes already, to supplement your natural tears and make your eyes more moist and comfortable. It's best to avoid decongestant eye drops for dry eye.here's an eye drop or ointment to relieve the symptoms of most eye problems  whether you have dry eyes, pink eye (conjunctivitis), red eyes or itchiness. Determining which kind of eye drop or ointment is best depends on what kind of eye condition you have: 1  Dryness.