How Sunglasses Work and Things to Consider Before Buying Them

There may be different reasons different people wear sunglasses.

While they are regarded as fashion accessories that can easily enhance looks, sunglasses are a lot more important than fancy eyewear.

They are primarily designed to offer eye protection and are modified in different ways to provide an array of functions for different types of wearers.

Do you want to purchase the best sunglasses for any reason? You need to understand how they work.

First of all, sunglasses are designed to offer protection from harmful Ultraviolet or UV radiation from the sun as well as HEV (high-energy visible radiation) or ‘blue light’.

They can also reduce glare and provide general eye comfort for individuals engaged in all kinds of outdoor activities.

Types of Sunglass Lenses

To help you understand better how sunglasses work and how you can get the best one for your need, we will discuss different types of sunglass lenses and their unique benefits:

1. Prescription Sunglasses

These are specially designed sunglasses for individuals who wear prescription eyeglasses or contact lenses.

In addition to offering the full benefits of sunglasses, they correct the vision of the wearer just as eyeglasses and contact lenses can.

Prescription sunglasses are available for any lens prescription. It is important, however, to ascertain that the one you want to buy offer 100 percent UV protection.

2. Non-Prescription Sunglasses

Most sunglasses you can purchase over the counter are regarded as ‘Plano’, which means they are without prescription.

As the name implies, they are sunglasses that are not prescribed to correct any eye disorder.

The important thing is that they offer protection against UV rays and blue light; they may also offer other benefits, depending on extra treatments.

3. Performance Sunglasses

These include all sunglasses that are designed to help individuals who participate in outdoor activities, including work, sports and driving.

Performance-oriented sunglasses are designed with extra features that enable the wearer to get the best possible vision under extreme conditions.

They are also expected to offer comfort and flexibility to make the wearer perform outdoor activities better and faster.

Sports sunglasses are classic examples of performance sunglasses.

4. Polarized Sunglasses

Polarized sunglasses have special filters that block intense reflected light and reduce glare.

They are important for people who spend a lot of their time outdoors and on flat, bright surfaces.

They are important for sports like skiing, golf, biking, swimming, jogging, and other activities that require the elimination of glares. They are also great for driving.

5. Photochromic Sunglasses

Photochromic sunglasses are specially treated to adapt to different light conditions. The more these lenses are exposed to UV rays, the darker they become.

It may take a little while for the lenses to change colour and adapt to a new condition, but they surely provide protection and comfort in different lighting conditions.

6. Gradient Sunglass Lenses

These lenses are tinted from the top down so that the top lens is darkest.

They protect the eyes from overhead sunlight and allow more light through the bottom side. These lenses are great for driving and for reading outdoors.

7. Double Gradient Sunglass Lenses

These sunglass lenses have tinted top and bottom sections while the middle sections have a lighter tint.

They will reasonably protect the eyes from overhead sunlight as well as light reflecting off surfaces like water, sand and more.

The middle section of double gradient lenses helps you see clearly and enhances comfort.

8. Mirror-Coatings

Mirror-coatings are highly reflective coatings that are applied to the front surface of sunglass lenses to reduce the amount of light entering the eyes.

Also referred to as flash coatings, this treatment is important for lenses that are to be worn for activities in very bright conditions like snow skiing on a very sunny day.

The colour of the coating is just cosmetic and will not influence colour perception.

Things to Consider Before Buying Sunglasses

A good understanding of the different types of sunglass lenses is important but will not be enough to lead you to the perfect option.

There are some other things to consider before buying sunglasses and we will summarize the most important ones here:

11. It Must Offer 100 Percent UV Protection

The most important thing to look out for in sunglasses is complete protection from UV lights. This is what they are primarily designed to do.

It is wrong to assume that every sunglasses on the market offer 100 percent protection.

Check the label and confirm that the sunglasses you want to buy bock 100 UV rays. There should be a sticker of tag indicating this.

1. It Should Cover Your Eyes Properly

It is also important to ensure that the sunglasses you are wearing covers your eyes properly. This is why it is generally believed that the bigger the sunglasses the better for your eyes.

Wraparound designs are great if you are going to be involved in some form of outdoor activity.

Wearing oversized sunglasses is also an option when you care so much about more coverage from sun rays.

2. Darker Is Not Always Better

There is a misconception that darker sunglasses are better. This is not really the case as the darkness of the lens has nothing to do with UV protection.

In fact, darker sunglasses that do not offer full UV protection will hurt you in the long run.

3. Colour Does Not Influence Protection

It is also important that you understand that colour doesn’t matter when it comes to UV protection.

Though they may influence contrast and improve sports performance, colour plays no role in UV protection.

4. Shatter-Proof Sunglasses Are Great

For sportspeople and individuals involved in outside physical activities, buying shatter-proof sunglasses is important.

For protection against serious injuries to the eyes, buy sunglasses made with impact-resistance materials.

5. Price Is Not Everything

For sportspeople and individuals involved in outside physical activities, buying shatter-proof sunglasses is important.

For protection against serious injuries to the eyes, buy sunglasses made with impact-resistance materials.

6. Cases Are Important

Sunglasses need to be kept in soft cases to prevent scratches and other forms of damages. It is better to buy sunglasses that come in strong original cases.

While they are primarily made to offer protection against UV rays and blue light, sunglasses offer several other important benefits.

Depending on what you need, choose appropriate sunglass lenses.
It is also important that you consider the other important things discussed here before making a purchase.

If you have any further questions, contact us and we would be pleased to help you.