Do you use a pair of spectacles? Or does someone in your family wear one?
Today, 25% of the world population uses some kind of vision correction aids, with spectacles forming a big part of them.
The most important part of the spectacles is the lenses. However, the saddest part is that most of us are not aware of the type of lenses available to us. The awareness on lenses and its various types and uses will help us select the right one for our eyeglasses.
Here is a look at the various types of lenses and its uses.
Single or multi – where do you fit in
Most people require single vision lenses to correct nearsightedness or farsightedness, and multi-vision lenses like bifocal and trifocal lenses to correct multiple vision problems. Progressive lenses come with progressive optical strengths, which allow eyes to adjust accordingly while focussing on faraway and close objects. It provides with ease of adjustment without any sudden change.
Which lens should you sport
Everyone is unique. The type of lenses required differs from person to person. The type of lenses which you should choose for your spectacles depend on the usage and your age.
High-Index Lenses
These lenses are manufactured using a special kind of plastic. High-index lenses refract light better than usual plastic lenses. High-index lenses are also thinner, lighter and more comfortable than traditional plastic lenses.
Polycarbonate Lenses
These lenses are prepared from hard plastic, which are more impact-resistant than basic plastic lenses, and even protect you from the UV rays. Polycarbonate lenses are lighter and thinner than standard plastic lenses. This quality of these lenses makes it ideal for children and for the aged.
Photochromic Lenses
People with sensitivity to the sun should consider photochromic lenses, as it transforms itself into dark-coloured lenses when exposed to sunlight.
Lens Coating
Today, there are different types of coating available for lenses. The type of coating varies according to your lifestyle and needs.
Scratch-Resistant Coating
The scratch-resistant coating is beneficial, as it protects the lenses and extends their life. When applied to the front and rear of lenses, this hard-coating makes the lenses resistant to scratches.
Anti-Reflective (AR) Coating
With anti- reflective coating, wearers find an increased quality of vision, mostly during driving at night, when the glares caused by light of the incoming traffic is at the maximum. Anti-reflective coating even makes the lens appear thinner and transparent, thus giving a clear vision for the wearer.
Ultra-Violet (UV) Coating
Ultra-violet rays are the leading cause for many diseases, which includes cancer. Wearing a pair of good quality powered sunglasses is an investment worth your lifetime. One should look for lenses which block 100% UVA and UVB radiations.
Going for powered sunglasses will not only help you correct your vision, but also protect your eyes from UV rays.
Now, since you are aware of the type of lenses and its suitability, choose the appropriate one when you go eyewear shopping the next time.
