Understanding Bifocal Lens
2012-08-18 00:10:43 LA
A Bit About Bifocal Lens
We reach the age of 40-45 and suddenly it seems like the
writing on the shampoo bottle has been printed smaller. For most this seems to
be the time when changes in our prescription start and new vocabularies need to
Once the emotional struggles are over, for they seem to be
present whether you wear glasses or this is your first foray into the “need to
see better” arena; you will need to purchase either reading glasses or bifocal
Some say that bifocal
lenses were invented by Benjamin
Franklin , but regardless of who invented them it’s a clever solution for
being able to have a multifocal lens. Lens that can help you see up close or far
on the same pair of glasses. This would mean there is a magnifying power at the
bottom of the lenses (for help reading) and whatever power you normally need on
your glasses at the top/middle of your lenses for seeing far. This idea of
having two prescriptions on one lens, with a separating line is called bifocal
There is a little learning curve once the glasses are worn.
Most people tend to lower their head when they are reading something, maybe in
an attempt to get closer. Well here one needs only move the eyes down without moving the head…just
lower the eyes and we will then have available the magnifying power of the
lower portion of the lens.
This is the
trick, we must relearn to look down with the eyes and not lower the head. The
eyes then will refocus and use the new correction power available.
For some people this refocusing may cause them to experience
dizziness or even headaches.But this
will go away if it persists then one must revisit there eye care doctor.
Another option without a dividing line, but with multifocal
lenses that blend into each other is progressive lens.