From practice i make sometimes mistakes and when a person wants to changr their progressive lens wether the precription was changed or the lens has damaged i sometimes whant to see what lens the person wear. Some pairs of lens ar so damged that the marks cannot bee seen or i do not know what kind of lens is it (marks are changed worldwide and some countries use different from others). Haw can i identify what type of corridor it has long or short?
I have to mention that i have seen long corridors that are mounted on small frames.i think that people use the minimum requairements as it can be possible smal thant that. +/- 1mm. Olso i have seen small corridors on large frames. What is the easiest way to identify them. Thank you.
Bookmarks