Bifocal Contact lenses - Ready To Wear
Eyeglasses with thick lenses and a line across them were the
only option for people with both nearsightedness and
farsightedness. Eyeglass frames were heavy and not only that
they were to say the least unattractive. Bifocal Contact lenses
were difficult to get used to wearing. Going down stairs
especially, you need to look either up or down. While getting
adjusted to wearing bifocals some people get dizzy.
People had only one choice if they wore bifocals, eyeglasses.
When contacts hit the market bifocals still had to be in
eyeglasses. That was then and this is now. Contacts offer as
many choices if not more than the choices available for eyeglass
wearers. Many people are joyous because bifocals now come in
contact lenses. Contact bifocals are available in rigid, soft,
and gas permeable materials.
What people need to use bifocal lenses? Those who when focusing
on near objects, have trouble. What they have is called
Presbyopia. It is unusual for this to develop before the age of
40. Bifocals glasses are similar to Alternating Design because
half the lens has distance power and the other half has powers
for near objects.
Blended prescriptions for both near and distant vision are
Simultaneous Design; they fill in the area of the pupil. Whether
you are looking near or far your eye will adjust and learn to
interpret the circle power choice. Concentric Design lenses are
the radials of contact lenses. The inner lens works on the
nearness vision while the outer part works on distant vision
correction or vice versa.
Translating Design- these are also very similar to bifocal
eyeglasses, the distance correction is above the near
correction. The lenses are divided by a line. The lens has a
flat bottom so that when you blink it won't move around in your
eye. The center of the Asferic Design lenses is where both the
near and distant vision is located.
The center of the lens is where the near vision correction is
and it's surrounded by distant vision correction. In some
situations they can be reversed. You can decide this with your
doctor. You wear one power lens in one eye and the other in the
other eye with Mono-vision Design lenses.
The distant vision is placed in the dominant eye usually. Here
again your doctor's exam will be able to determine this.
Simultaneous vision contacts are also available. Focusing on
both near and far objects at the same time is possible with
these lenses.
Concentric rings form the near and distant correction. Light
from both near and far objects can be focused on at the same
time since the near and far parts of the lens are in sight all
the time.
Simultaneous vision contact lenses have a problem. When the eye
is looking through the lens some of the light from the distant
objects will enter the distant part and vice versa. The eye, at
the same time takes in out of focus and focus.
The brain has to figure out which image is correct. Your doctor
must provide you with a subscription for contact lenses not
matter if they are bifocal or not. Your eye doctor will do a
very thorough exam to decide if you are a candidate for bifocal
contacts and what type might be right for you.
Lenses that fit and are comfortable may take time to find, as
with any contact lens there is an adjustment. Bifocal lenses may
not be for you, at least not in the contact lenses currently
available. Don't give up the search for the right lenses.
Do your research and keep up to date on the types of lenses
available to you if you want contacts and need bifocals. By
offering a free trial wear period of up to a week, some
companies allow you to try their lenses and see if you like them.
Check out discount contact lens stores online and some
manufacturers will give you a coupon to put toward the purchase
of their lens if you try them. Your decision about bifocal
lenses will without a doubt be affected by your budget.
Ask about the experience friends or family have had with contact
lenses. You and your doctor can, with this information make a
decision but not everyone has the same experience. The option of
bifocal contact lenses is now available for people with
astigmatism.
Toric contact lenses come in both color and disposable lenses.
Some professionals do not like fitting Toric lenses so it is
best to check with your eye care professional.