How Do Progressive Lenses Work? - Insight Vision - 0 views
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EYEWEARINSIGHT on 28 Dec 14Progressive lenses work in a very simple way, it's really actually progressive...therefore the lenses progressively change, that is, with as smooth transition as possible. Let's first take a look at what a prescription for progressive glasses would look like: or In either of these we can see where there is a number indicated for the "ADD" which stands for addition and refers to the reading power that is needed for these correction lenses.
