What Are the Types of Lens for Corrective Eyewear?

They'll be your companions for your everyday routine. You must know the basics! 

Do you feel tired of looking at a screen all day? Does the light bother you? Or do you have difficulty reading letters because they look as if they were dancing in front of your eyes? If anything like this happens to you, then it's probable that you need some corrective eyewear. And today, you'll learn what you can find in this world to correct your sight and help you feel and look your best.

What Are Corrective Lenses?

Frames, while fundamental, are the least important aspect of eyewear. The principal thing is the crystals; they make your eyesight more efficient. The main issues with sight are related to reflective conditions, in which a part of the eye doesn't work as expected. These conditions have an advantage over other health issues: they can be corrected with a simple glass. And that's where corrective eyewear comes into play. These are used in a variety of situations to correct these reflective issues, such as presbyopia, myopia, hyperopia, and astigmatism.

However, professionals in health care know a secret that most people rarely consider: most of the time, one eye has a different condition than the other. For some reason, our bodies are not entirely symmetrical, and that affects sight too. One eye can have myopia, while the other can have astigmatism. Or one can need a higher formula in the crystals, for example, as it has higher damage in its reflective properties. And while those are just some of the things that can happen, you need to consider these as a reality when picking your glasses.

What Kind of Lenses Can You Find in Corrective Eyewear?

Now, let's talk about the pertaining issue here, the lenses. These are made of a variety of materials, mostly glass, polycarbonate and similar compounds. The shape and creation method is what defines the particular features that make the glasses useful for the issues that the user presents, and that's the reason for their prescription in the first place.

The most common shapes and uses of the corrective glasses are those indicated in the following list:

• Aspherical: This kind of lens has a gradual change of surface, making it lighter and more useful to treat specific conditions. These lenses are especially helpful if you have a strong prescription, as the glass is thinner but retains all its prescripted qualities. It means that you can pick from the same variety of frames as other people, without being limited by the size of the crystal.

• Bifocal and Trifocal: As the name indicates, bifocal has a far sight (upper half) and a near sight (lower half) glass design. These are relatively common lens types for seniors, but some physicians prefer to prescribe them over other alternatives for people of other ages ranges too. While trifocal have, as the name suggests, a third focus in their scope, making a smooth transition from near to far sight. This small bit of glass is a great aide for people that need quicker adaptation between far and near focus.  

• Hi-index: Unlike other models, Hi-index glasses are made with plastic instead of glass. These are more durable, and often, require less thickness to offer the reflective correction properties that the wearer needs. It means that while they are indeed a non-common material for eyewear, they are incredibly useful and more comfortable for the wearer because they are extremely lightweight!

• Photochromic: These lenses are one of the most identifiable because of their unique property. What makes them special is that they begin to darken as soon as they're exposed to light. And they can be combined with all other kinds of lenses, making them great in case you don't want to have an extra pair of glasses.

What's Coating for Eyewear?

The coating is a whole different issue. Depending on the particular needs of the customer, companies offer a variety of coatings for the glasses that make them more durable and practical. These are the most common ones on the market:

• Blue-light reduction: People that work in front of screens for long periods of time need this coating. This is your best alternative if you want a coating that's not as visible as the anti-reflective, but with all its properties plus more. It creates a visual shield from exposure to smartphones, computers, in-house illumination and even the UV rays.

• Anti-reflective: Do you know that lights at night are often damaging? The same blue glow, haze, and glare that shines from screens can make you feel tired and wear down your eyes. That's why this coating is fundamental if you're in front of a screen. The unexpected perk? It acts as a shield for the glass, and it helps reduce the nicks and scratches it might have.

• Anti-scratch: While nothing can avoid a fracture in the armor of our glasses entirely, this is a good alternative for protecting them a bit more. This type of coating can help, especially if you're a highly active person, and you put on and take off your glasses frequently, as these are the opportunities in which they scratch more. Besides, it makes them last more, and this is an excellent thing because glasses are an investment.

If you're looking for corrective eyewear, then Oberti is your best choice. With a team of professionals that can assist you in finding the perfect alternative for your needs, you'll leave the store with a smile on your face. Make sure to check out our social media profiles to know more about what we have to offer you. Oberti, exclusivity at first sight.

Once you know the type of glasses, all you've got to do is select the perfect frame, and you're all set to conquer the world.

Source: Nationan Eye Institute