Can You Wear Blue Light Glasses All Day? When To Wear Blue Light Glasses?
Published on August 7th, 2026
Canada 
Blue light glasses refer to glasses which are designed to reduce the blue light emitted from digital screens from hitting the eye. In our digitally oriented world, we are exposed to devices that emit blue light constantly, from computer screens to phones. This makes blue light glasses a viable option for those who want to reduce the amount of blue light that hits the eye. Read on to see if blue light glasses can be worn all day and when it is ideal to wear them.
When to Wear Blue Light Glasses
Blue light glasses can be worn when using or watching digital devices such as computers, TVs and mobile phones. This is because their purpose is to block blue light, which refers to a portion of the visible light spectrum. Blue light can be found in many electronic devices, which is why they should be worn when you are using them. Blue light glasses do not have to be worn during activities such as reading, walking outdoors, or running errands; however, they are still safe to wear. It is important to note that there are no conclusive studies to suggest that blue light glasses can have a major effect on your overall eye health.
Can you Wear Blue Light Glasses All Day?
Yes, blue light glasses can be worn all day, but it is not necessarily essential to wear them all day every day, according to Dr. Mae Chiu, a member of the Canadian Association of Optometrists (CAO). Ultimately, there is limited research that assesses how truly effective blue light glasses can be. This means that it is currently inconclusive whether wearing them all day will benefit or cause adverse effects on eye health.
Is It Bad to Wear Blue Light Glasses When Not Looking at a Screen?
No, it is not bad to wear blue light glasses when not looking at a screen. If you wear them in situations without screens, whether indoors or outdoors, it will not be detrimental to your eye health.
Do Blue Light Glasses Affect Your Vision or Eye Health?
There are no conclusive studies to suggest that blue light glasses affect your vision or overall eye health. The purpose of blue light glasses is to block or reduce the blue light rays that are emitted from digital devices. However, studies on their effectiveness have been mixed. It is likely dependent on an individual basis whether they are effective. Alongside wearing blue light glasses, it is important to engage in healthy habits to look after eye health, including habits regarding the use of digital devices. For example, make sure you stop using devices around 30 minutes to an hour before bedtime, as recommended by The National Sleep Foundation.
Can you Get Prescription Blue Light Glasses?
Yes, at Oscar Wylee, we offer a BLULite filter that can be added to prescription glasses. Prescription glasses have a prescription or magnification over the lens to help correct refractive errors, and will be prescribed to an individual if needed by an optometrist.
What are the Benefits of Blue Light Glasses for Individuals?
The intended benefits of blue light glasses for individuals can be reduced eye strain, improved sleep quality, and more comfort during work. It is important to note that there is little research that is conclusive on the effectiveness of blue light glasses, and it can vary from individual to individual. However, these are the intended benefits of blue light glasses, which are expanded on in detail below.
- Reduce eye strain: Reduced eye strain is a proposed benefit of blue light glasses. This is because they filter out blue light, which is emitted by screens and can often cause discomfort around the eyes after prolonged use.
- Improved sleep quality: Improved sleep quality is a possible benefit of blue light glasses. This is because they block blue light, which interferes with the production of melatonin, a hormone which regulates sleep.
- More comfort during work: More comfort during work may be a possible benefit if you wear blue light glasses. As they can reduce eye strain and improve sleep quality, work, particularly desk jobs, can become more comfortable and easier to manage.
What are the Different Types of Blue Light Glasses?
There can be differing types of blue light glasses, as blue light protection can be either a coating applied over the lenses or a filter. There can also be different levels of filtration that can occur between types of lenses. Both types block blue light, but are applied to the lens in different ways.
Should You Wear Blue Light Glasses While Watching TV?
Blue light glasses can be beneficial while watching TV, as they emit blue light. Wearing blue light glasses while watching TV may help reduce feelings of eye fatigue and support comfort, particularly if watching late at night.
Can You Use Blue Light Glasses for Reading Books?
Yes, blue light glasses can be used for reading books. However, when you are reading a physical book, you do not experience blue light exposure from the book, so it won’t do much for your vision in this regard. Reading glasses may be a more fitting option for this. You might like to try blue light glasses when you are reading electronically, such as on a tablet or mobile phone.
Can you Wear Blue Light Glasses in the Sun?
Yes, you can wear blue light glasses in the sun. However, you may prefer to wear sunglasses as they are effective against the sun's UV rays. At Oscar Wylee, all of our lenses come with UV coating.
Can you Wear Blue Light Glasses with Contacts?
Yes, you can wear blue light glasses with contact lenses. Blue light glasses function independently of contact lenses. The blue light-blocking ability of the glasses won’t be minimized while wearing contact lenses. Please note Oscar Wylee does not sell contact lenses.
Do Blue Light Glasses Block UV Rays?
No, blue light glasses are not designed to block UV rays. Blue light glasses block blue light, which is part of the visible light spectrum rather than the UV light spectrum. Blue light has a shorter wavelength with a higher energy of 400–500 nanometres, according to Health Canada. All Oscar Wylee lenses come with a UV coating to help protect the eyes from UV rays.
How to Tell If Your Glasses Have a Blue Light Filter?
You will know upon purchase if your glasses have a blue light filter, as you will have likely included it as an add-on to your new glasses. such as with an Oscar Wylee BLULite Filter. Otherwise, blue light glasses may have a faint yellowish tint to them compared to regular glasses.
How Do I Know If I Need Blue Light Glasses?
You will know when you need blue light glasses based on how frequent your screen exposure is and how your eyes react in relation to screen time. If you find that excessive screen exposure is leading to eye strain and headaches, you may want to try blue light glasses.
Do Blue Light Glasses Hurt Your Eyes?
Blue light glasses do not hurt your eyes. They are safe to wear and are intended to help reduce eye strain caused by prolonged screen exposure, ultimately making them a comfortable eyewear choice.
Should I Wear Blue Light Glasses?
Whether you should wear blue light glasses is up to your lifestyle and eye sensitivity. You should wear blue light glasses if you frequently look at digital devices. Additionally, if you have felt symptoms of eye strain and disrupted sleep as a result of your device usage, it might be beneficial to try blue light glasses. You should always consult with your optometrist or optician before trying blue light lenses to assess whether they are right for your needs.
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