Varifocal Lenses
When
I had my optician supply me with varifocal glasses they failed to tell
me that I had a choice of width of reading area. This is important if
you need your spectacles for extensive periods of reading or using a
computer.
Varifocals
provide focus at all distances with the long distance focus at the top
of the lens and close-up, or reading at the bottom.
The
basic varifocals have a limited width of reading area and this can be
tiring after a while, wide varifocals have a reading area that can be
thirty percent and more and extra-wide or superwide even more. Be
warned though, choosing extra wide can almost double the cost of the
lenses.
If you are
ordering
your spectacles over the internet be sure to get the pupillary distance
correct. This is more important if you are ordering glasses with high
magnification or varifocals. -- Rashel (4eyes) Alhoudi
Distorted
Spectacle Frames.
Always remove your glasses in such a way that the forces are applied
equally. Over time they will become twisted if you always remove them
by one side - usually the right hand side if you are
right-handed. Check your friend's specs, they will usually
have
the right hand leg slightly bent out more than the left side. Unsightly
indentations can show when spectacles are removed, these marks can be
avoided by gently adding some curvature to the legs, this applies
mainly to men but women can benefit too as it improves comfort -- Davina
Lens
Coatings
Washing your glasses in dish soap (washing up liquid) can damage the
coating and cause it to flake or detach. Always use a clean cloth,
which should preferrably be microfibre - and NEVER use paper towels,
they can contain abrasive mineral powders. -- Davina
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