How color contact lenses can affect your vision
The lenses that are colored over a pupil reduce quantity
of light getting in an eye, which might be unsuitable
for some activities. For example it is better to go with
color lenses that are transparent over a pupil if you
drive.
However
the majority of partially transparent color lenses like
Acuvue 2 Colors
enhancers let through enough light to worry about
sight problems.
If the lens lets through 80% or more of the light, there
should be no problems. As for color perception some researchers
concluded that color contact lens doesn’t distort
colors, while others think that it slightly affects color
vision.
Potential danger of using opaque color contact lenses
is an effect it has peripheral vision and in casual change
of sight because of different light conditions. This depends
on how closely the center of the lens matches your pupil
and also how well the lens is fitted. However researches
on influence of opaque color lenses on vision have yielded
inconsistent results.
Care
for color contacts
Color contact lens doesn’t require any special
care – you can use all available cleaning and storage
solutions. As a result of using some cleaning solution
color can grow dull, however with the usage of frequent
replacement lenses and multipurpose solutions such cleaners
are used very seldom.
Multipurpose solutions is best suited for cleaning and
storing color lenses. However, remember that you shouldn’t
rub your color contacts as you would rub clear lenses.
Some ways of colors used in color lenses can change
an electric charge of a surface, which results in protein
build-ups. However, if you are using frequent replacement
lenses like Freshlook
color lenses (monthly replacement) or Acuvue
(2 weeks replacement) this shouldn’t be a problem.
From this point of view it is healthier to wear disposable
color contacts rather then conventional ones.
As for oxygen permeability, color contacts let through
as much oxygen as clear lenses. Coloration makes no difference.
Procedure of selection of color
contact lenses can differ from techniques of selection
of unpainted lenses a little. The centering is the major
element of correct selection if it is necessary to receive
conformity between a transparent zone of a pupil of a
lens and a pupil of an eye, and between the painted zone
of a lens and cornea. For all color contact lenses the
cosmetic effect that will be better, than the centering
is better, but for opaque color lenses it reduces possible
influence on sight of figure of a lens to a minimum.
