The central part of lenses is useful to focus objects that are at an intermediate distance.
This distance goes from 0,5 to 1,5 meters. It can be necessary to lower or lift slightly the chin to find the irght focus point. Those who work in office frequently use the intermediate area to look at the computer screen or the objects on the desk.
Occupational lenses for visual comfort
For thsoe who need specifi performances in intermediate area, it is available a more customized solution: the so-called indoor lenses. These lenses are specifically studied to make simpler an more comfortable the vision at medium and close distances thanks to a wider intermediate area. They are suitable for professionals, employees, housewives, and all those who need a vision at variable ditances that can be from 40 cm to about 4 meters. We will be glad to advice the best visual solution.
Read also:
