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.  

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Created on Sep 22nd 2020 03:50. Viewed 235 times.

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