New Multifocal Contact Lenses Helping People with Presbyopia
Do you have a bad case of presbyopia? Do you also wear regular glasses
and want to make the switch to contacts, but aren't sure whether they
make contact lenses for this condition? Well, you'll be happy to know
that a number of contact manufacturers stock a range of very comfortable
presbyopia contacts, which can be worn for varying lengths of time.
What is presbyopia and how can contacts help correct the problem?
Presbyopia is a very common eye condition that usually presents itself
when you reach about 40 or 50 years of age, you will know that you have
it because it becomes difficult to focus on objects that are close to
your face. This condition is caused by the natural affects of aging, the
curvature of our lenses becomes misshapen and the muscles that control
focusing loses their strength making it difficult to quickly focus in on
objects at certain distances. The usual course of action is to buy a
pair of prescription glasses with bifocal lenses, these come with dual
lens strengths allowing you to look down at a book and read it in the
In the past people with Presbyopia weren't able to wear contacts, but
thanks to advances in medical science there are now new forms of
multifocal contact lenses that correct your long and short sight. Presbyopia contacts are usually made of silicone hydrogel just like many
other forms allowing higher levels of liquid retention and a good amount
of oxygen to seep through to your eyes surface. The difference lies in
the way that they help your eyes focus on near and far distances, here
are the 3 options that are currently available for your consideration:
Alternating Bifocal lenses - This type of presbyopia contact lens
mimics standard bifocal lenses, the lower half of the contact lens is
for viewing close objects while the central and top part is for far away
objects. Alternating bifocal lenses usually come as hard gas permeable
contacts, so they will stay in place when you move your eyes to
alternate between focal points.
Concentric ring lenses - This is a new idea that uses light
intensity falling on objects to focus your vision, for example objects
closer to you will have more light on them then something further away.
The contacts have ring bands with different lens powers, which change as
they get further away from the central point; when light reflects off an
object close to you; your pupils expand to let in more light and focus
on a certain ring on the contact.
Aspheric multi focus lenses - This form of lens uses a similar
design as the concentric ring lens, but the left and right contacts have
different focal powers. The idea is that when the left and right eye
work together your brain can selectively pick out the right focus for
the specific objects distance. It takes about 2 weeks for your eyes to
get used to, but so far this is the most popular and comfortable form of presbyopia contact lenses.
Types of presbyopia multifocal contact lenses
If you're interested in buying a pair of presbyopia correcting contact
lenses then you have plenty of choices, there are several good quality
brand names that will offer you a decent pair to fit your situation. The
best way to distinguish which type of lens is best for your eye
condition is to consult your optician, he or she can help you choose a
particular brand. To help you consider your options here are several of
the most popular products currently available in major optical stores:
Bausch & Lomb Purevision Multifocals -
This Company is well known for creating durable and comfortable lenses; they have come up with
their own Purevision multifocal contacts lens made from the latest silicone hydrogel material
with a 36% water content and oxygen permeable surface. These contacts
can be worn for up to 1 month before they need replacing, and have a
unique shape that easily slips on to your eye ball with ease.
Ciba Vision Air Optix Aqua Multifocal
- This multifocal contact lens allows
for a smooth transition between near and far sight focusing, by making
use of the concentric ring design. The unique 'Aqua Moisture System'
by Air Optix Aqua Multifocal allows up to 5 times more oxygen
through the lens than traditional hydrogel soft multifocal lenses.
Acuvue Oasys for Presbyopia Contacts
- These presbyopia delivers a number of benefits that include; accelerated stabilization
design for clear, crisp vision all day, Hydraclear Plus Technology brings a remarkable moisture
rich wetting agent with high performace base materials to form clear, wettable lenses resulting in a
unique, silky, soft feel. Acuvue Oasys for Presbyopia technology promises sharp and clear vision in
all situations; short distance, long distance and between as well as at various lighting conditions.