Contact lenses and their different classifications
Contact lenses are thin
circular surfaces that are placed over the eyes cornea. When worn for vision
corrective purposes they act as a substitute for eye glasses. For many years,
contact lenses were designed while keeping only function in mind. But now with
technological advancements, there are lenses that are designed for fashion,
style and cosmetic purposes.
In this article, we’ll
talk about the contact lenses used for vision corrective purposes.
Ditching the eye glasses
and considering wearing contact lenses for vision correction is an excellent
idea. But before buying a pair of contact lenses for yourself, you need to keep
many factors in mind. You must be aware that not every contact lens would be
suitable to your particular eyes needs. Firstly, visit an eye specialist to get
the eye checkup done and know about the requirements of your eyes. The doctor
would also suggest you the brands of contact lenses available and which would
be the best suited to you.
Contact lenses can be
classified on the basis of various factors namely:
·
Purpose
for which they are designed
·
Material
they are made from
·
For
what duration they can be worn
Material
The two main types of
contact lenses categorized on the material type can be either hard or soft. Hard
contact lenses are gas permeable and are made from strong and durable material.
These contact lenses are less comfortable for the eyes because of their hard
material which limit the amount of oxygen passed through the eyes. Soft contact
lenses, on the other hand, are made from thin and flexible materials. They are
more breathable than the hard contact lenses and can hold high water content.
Duration
The length of time for
which the contact lenses can be worn totally depends on which variety they
belong. If they are hard contact lenses, they are highly durable and can last
anywhere between six months to several years. On the other hand, the soft
contact lenses come with a definite period of time frame for which they can be
worn and then they need to be replaced. They can come with different
replacement schedules such as daily, weekly, monthly and yearly. There are
contact lenses that can be worn day and night for up to a month. There is no
need of removing such contact lenses even while sleeping.
Purpose
There are mainly three
designs of contact lenses that can are used for different vision correction
needs namely, spherical, toric and multi-focal. Each type is designed to
correct specific vision impairment. Spherical lenses are meant for those who
have either long or short sightedness. Toric contact lenses are designed for
people having astigmatism. Multi-focal lenses are meant for people having
presbyopia.
Looking to buy high-quality prescriptive contact lenses or colored contact lenses online? Consider buying from Lenses Sclera, an authorized retailer for various reputed brands. They bring colored contacts in a range of hues including chocolate, green, gray, aqua, blue, violet and many more. That way, they ensure you find a pair of colored eye contacts that suit your purpose well. They make sure that your pair of colored contacts is sourced from leading brands so that there is no compromise on quality. Browse through their entire selection and get a pair of colored contacts that suit your taste and preference.
Comments