what is biofocal lenght and how can be it corrected
Answers
Explanation: Hey Mate This Might Help You!!!!
There are even special bifocals and trifocals designed for glasses for computer work and other tasks that take place at the intermediate range. In the following images, distance describes the area of the lens used for far vision, intermediate for arm's length and near for reading vision (about 16 inches away).
It Is Also Called:-
Multifocal eyeglass lenses contain two or more lens powers to help you see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age (presbyopia). Flat-top bifocal lens (also called a D-seg or straight-top). Executive bifocal lens (also called the Franklin bifocal).
Answer:
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Explanation:
Sorry, don't know about biofocal length