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News » blurry vision with progressive lenses, why?

blurry vision with progressive lenses, why?

Why with my old progressive lenses, as soon as I look down while walking I see out of focus while with your new lenses this problem has been eliminated? Good morning, I want to solve this problem assuming that his old lenses she wears are of good quality and that does not depend on them. To date, in fact, the difference of all \'optical cost between a lens internal geometry (the ones we use) and an old generation to external geometry is minimal, and for this reason should point directly to the quality. So if your lenses are not purchased more than 3 or 4 years ago I would say that the problem that you are experiencing is simply due to the fact that the mount wearing socks too high and she is likely to look through the intermediate zone, instead of the to far away (see photo) and to improve the position there are two ways: A- If the frame is metal you should widen slightly hake (by pressing them with your thumb). This operation will ensure that the sock glasses slightly lower and accordingly the disturbance created by the central part of the lens that is dedicated to intermediate vision should disappear. B- If instead the frame was plastic and not adjustable on the nose, the best intervention might be simply to lengthen and / or decrease the bending of the rods behind the ears so as to allow the mount to slip down lightly on the nose and obtaining the desired result.


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