Are Thinoptics guaranteed for life?
THINOPTICS – LIFETIME GUARANTEE
(one replacement for every purchase) that warrants your glasses against defects, workmanship and failures under normal use forever! purchased seperately as stand alone products as these products are sold to you as a routine service.
How do you know what strength reading glasses to get?
Look to see what line has the smallest print you can read without straining. For example, if you can read the +1.5, but the +1.00 is blurry, then you know you likely need a strength of +1.00. Start at the first line and move to lower lens strengths to determine the most appropriate fit.