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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What is an IOL? An intraocular lens implant is a synthetic, artificial lens placed inside the eye that replaces the focusing power of a natural lens that is surgically removed, usually as part of cataract surgery [See figures 1 and 2]. When the natural lens is removed, much of the eye's focusing ability is lost. To restore vision, lost focusing power is usually replaced by one of three methods. The first method is the use of glasses (spectacles). The required lens power is high and the corrective lens quite thick.