Regular eyeglasses are mainly used to rectify some common vision errors, like nearsightedness, farsightedness etc. However, other vision errors, like presbyopia and other related vision problems, are much more complicated and hard to treat. In this situation, multi-focal eye wear are needed. Some of the most typical ones include bifocals, trifocals and progressive eyeglasses– all of which are relatively traditional means to treat these serious eye problems, because wearers have to look at different part of the lenses when they wan to see objects at different distance. This can make wearers and their eyes very tired if they change their vision on and on. Accordingly, as technologies and techniques in optical industry advances rapidly in recent years, some new innovations are made, namely, adjustable focus eyeglasses. These eye wear are completely made from the latest technologies and totally different from traditional eye wear in the field.
Different from traditional reading eyeglasses, adjustable focus eye wear are manufactured in much more advanced designs and techniques- the focus will change automatically by changing the liquid in the lenses- they may be powered by pressure or electricity. Therefore, wearers are not needed to look at different parts of these glasses, but move their eyes natural when they want to see objects at any distance. When their eyes focus on something, the lenses will react instantly, so as to meet then current vision needs. In other words, the lenses will change as the eyes, not eyes change with the lenses like traditional ones. Therefore, wearers will feel no discomfort, though they change their vision quickly.
Though adjustable focus eyeglasses are not very similar to regular eye wear, they can provide wearers with the greatest vision clarity. The lenses are made from highly transparent liquid and are control by special devices. Therefore, no matter where wearers look at, great optical clarity can be ensured. This is why many people tend to buy these special glasses.
Moreover, it is said that adjustable focus eye wear are revolutionary results in the field, which can free people from traditional reading eyeglasses. It is true in functionality. Still, they can now be manufactured at low cost and afforded by wearers from all walks of life. This makes it possible that all sufferers of prebyopia and some other related vision errors can benefit greatly as a result.
In a word, adjustable focus eyeglasses are ideal alternatives for people who are now suffering from presbyopia and other both nearby and distant vision problems.