Last updated: August 20, 2021

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Do you make constant use of electronic devices such as computers and mobile phones? If so, you need to protect your eyes from constant exposure to screens and the light they emit! A great solution is to buy blue light-blocking glasses.

Studies from reliable sources have found that blue light is increasingly harmful. But is it worth buying glasses that protect you from blue light? Are there differences between the models? Is it enough for your daily life? Stay with us to have these doubts answered!

The most important

  • Electronic devices such as computers, mobile phones, and televisions emit blue light, which is very harmful to human eyes.
  • Blue light-blocking glasses can prevent these harmful rays from reaching the eyes, helping people who spend hours of time on screens.
  • These glasses have no function other than to block blue light, but can be used in conjunction with other types, such as prescription glasses, to be more complete.

The Best Blue Light Blocking Glasses: Our Picks

Buying guide

It's time we talked in more depth about what blue light is and what advantages blocking glasses can bring you.

We have researched the most frequently asked questions about these glasses and prepared full answers to them in our buying guide!

Imagem mostra uma mulher de óculos mexendo em um smartphone.

Smartphones emit blue light in very harmful amounts. (Source: Rainer_Majores/

What is blue light and how can it harm you?

There are many types of light rays that are harmful. You've surely heard of the ultraviolet ones, produced by the sun at its most intense times, and all the negative effects they are capable of generating. Blue light is another one of these.

Electronic devices, especially computers, smartphones, televisions and LED lamps, emit blue light. Therefore, most people are in contact with it. The brighter the screen, the higher the emission.

There are two major problems with blue light: First, it can damage human eyes, causing eye fatigue and damage to the lens and retina, leading to muscle degeneration in the region. Second, it blocks the production of melatonin, the hormone that regulates our sleep.

Have you ever noticed that your sleep quality deteriorates after using an electronic device for a long time before going to sleep? That's exactly why.

Did you know that, according to the American Academy of Ophthalmology, blue light itself is not so harmful to the eyes, but rather the over-recommended use of electronics? We could lead normal lives if we didn't have to spend so much time on our computer or smartphone!

What are the benefits of blue-light-blocking glasses?

All the main benefits of blue-light-blocking spectacles are for your health: You will feel much better after wearing one while you are tinkering with electronics!

Blue light-blocking glasses will decrease the incidence of the rays on your eyes, thus preventing eye fatigue and possible long-term effects such as retinal degeneration and even cataracts.

At the same time, it will allow a better production of melatonin, restoring sleep to an ideal condition and avoiding the side effects of not sleeping well, such as constant tiredness, productivity, and headaches.

Its main disadvantage is the fact that it may not be that necessary: For those who can, reducing the number of hours in contact with screens is the best option.

We have prepared a table with the main advantages and disadvantages of sun blocker glasses:

  • Protects the eyes and prevents short and long-term problems
  • Improves the quality of sleep
  • Helps with problems such as headaches, fatigue and stress
  • Generates a better quality of life as a whole
  • Has a less impactful effect than simply spending less time in contact with electronics
  • No degree: Must be used together with other lenses

When should blue light blocking glasses be worn?

You should look for blue-light-blocking glasses especially if you are a person who spends a lot of time in contact with electronic devices, especially computer screens, smartphones, or televisions.

Getting the glasses is recommended for anyone who spends hours in contact with electronic screens

Each of these screens emits large amounts of blue light, so they need to be blocked. If you spend hours a day messing with these devices, work in contact with them or have no way of reducing them, getting glasses is the best solution.

The use of blue-light-blocking glasses is independent of problems such as myopia or astigmatism and has no influence, either positive or negative, on the wearer. It only relates to excessive contact with electronic screens.

Blue light blocking spectacles or adaptive lenses?

One possibility sought by many people is glasses with an adaptable lens, also known as clip-on lenses, which allow constant changes according to the situation.

In an adaptive spectacle, you can put on the blue light blocking lens when you are in front of a screen and then change it for an ultraviolet blocking lens when you go out into the sun. This versatility is the main advantage.

However, glasses with adaptive lenses don't tend to have much quality in any of their options. They serve only as preliminary blockers, far from having the same effects as models that really specialize in certain protection.

We recommend adaptive glasses only if you don't spend that much time in front of screens or the sun and want to have light protection while saving money. Otherwise stick with separate models, one for blue light protection, the other for UV protection.

In the table below, you can find a comparison between the two types:

Blue light blocking glasses Adaptive glasses
Protection Against blue light One lens for blue light, another for ultraviolet light
Advantages Effective protection against blue light Great value for dual, versatile protection
Disadvantages Does not protect against other types of light Not able to offer such effective protection

Are blue light-blocking glasses also good as prescription glasses?

The only function of blue light blocking glasses, as the name implies, is to block blue light. If you need prescription glasses, you should go to an optician with the specifications suggested by your doctor and leave the fitting to the professionals.

If you already wear prescription glasses and also want to block blue light, you need to choose a model that allows the lenses to overlap. This can be done either by removing the lens from one frame and placing it on the other, which is not so recommended, or by various adjustments.

The best models of the blue light glasses have flexible and adjustable arms, allowing it to be placed over the common glasses. This is similar to what happens when you go to the cinema and need to put a 3D glasses over your prescription glasses. It is the best option to see well and stay protected!

How much does blue light blocking glasses cost?

You will find blue light blocking glasses in price ranges which can vary between 25 and 170 pounds. The quality is directly linked with these prices, so remember that choosing the cheapest can damage your health.

Purchase criteria: Factors when choosing blue-light-blocking goggles

How do you choose between so many models of blue light-blocking glasses? What are the criteria that can help in the final decision? It is time to discuss four very important criteria:

Below, you can find more information about each of them!


More than just eyesight accessories, spectacles have already become fashion accessories. And, of course, this also applies to blue light blockers.

If you wear your glasses at work or with family members, you may want them to look good and match your face well. Therefore, evaluating the design is quite important. Choose a shape that suits you, does well for your self-esteem and ensures your mental wellbeing.

Imagem mostra o rosto de um homem usando um óculos.

Gamers are among the leading users of blue light-blocking glasses. (Source: Zakaria Zayane/


There are variations in both stem colour and lens colour. The former is purely for aesthetic reasons, which ties in directly with the previous item. But there's more to be said about the lens than that.

The colour of the lens can also influence the efficiency of the protection

Besides these same aesthetic reasons, the colour of the lens can also help with the efficiency of the protection. Some darker colours, especially orange, are very good for a more complete filtering of blue light.

For aesthetic reasons, some people would never wear glasses with an orange or red lens. They can opt for a neutral colour and still have good protection. But for those who like that, this possibility combines the useful and the enjoyable!

Special functions

Modern blue-light-blocking sunglasses have some other important functions. We have already talked about the adjustment of the arms, which allow the simultaneous use with prescription glasses or even ultraviolet light blockers. But that is not all.

There are models, designed mainly for gamers, which are capable of enhancing colours and improving the graphic conditions of the game. They are among the most expensive blocking glasses, but they can be very useful for this specific public.


Sunlight-blocking glasses are not made to be worn all the time. So they spend a lot of time in storage and in order to have a high durability they need an effective form of storage.

Some models offer very good storage and transport cases with zip or button. Prefer the ones with this type of facility, as it can prevent your glasses from breaking, scratching or being damaged shortly after purchase.

(Featured image source: Dean Drobot/