Blue light blocking glasses are among the most sought-after types worldwide, providing effective protection for the eyes and giving you the perfect comfort you need. In this article, we will review in Dalili Medical the best steps to buy these glasses from a reliable source, to ensure you get the highest possible quality.

What is the main purpose of using safety glasses?

 

Blue light blocking glasses contain filters in their lenses that block or absorb blue light, and in some cases, prevent the passage of ultraviolet rays. This means that when wearing these glasses while looking at a screen, especially in the evening, they can help reduce exposure to blue light waves that may affect your sleep, according to some studies.

Can safety glasses be worn daily?

 

Wearing blue light glasses does not have a harmful effect on your eyes, so you can use them throughout the day if you wish. However, they may not be enough to completely eliminate eye strain resulting from using screens.

Can safety glasses be used with prescription lenses?

 

Yes, blue light filters can be combined with prescription lenses to meet your visual needs.

Are safety glasses necessary for children?

 

Yes, especially if they spend a lot of time in front of screens, as it provides additional protection for their developing eyes.

Do blue light blocking glasses treat poor eyesight?

 

No, glasses only reduce visual stress, but they do not treat vision problems.

How often should protective glasses be replaced?

 

It is recommended to change glasses every two years or when there are scratches that affect the efficiency of the lenses.

**What is blue light?**

 

Blue light is one of the colors that the human eye can see, and is characterized by its short wavelength and high energy. Blue light makes up about a third of visible light, and its largest source is the sun. As for artificial sources, they include fluorescent tubes (fluorescent lamps), LED TV screens, computer screens, smartphones, and tablets in general.

**What are blue light glasses?**

 

Blue light glasses are glasses specially designed to filter out the blue light emitted from digital screens such as smartphones, computers, and tablets. Excessive exposure to blue light can cause eye strain, sleep disturbances, headaches, and may negatively affect eye health in the long term.

**What are the disadvantages of blue light glasses?**

 

One of the disadvantages of these glasses is that they may cause slight color distortion due to the blue color filter, but this can be adapted to after a short period. Also, low-quality glasses may cause a feeling of discomfort.

**Does blue light have benefits?**

 

Blue light is considered an activity stimulant, as it helps improve memory and brain function, and enhances mood. It also plays a role in regulating the body's natural sleep-wake cycle. In addition, the sun is essential for the growth and development of eyes and vision in children.

**What are the harms of blue light?**

 

Exposure to blue light from screens is not considered harmful if it is for short periods, but continuous exposure to blue light emitted from digital devices for long periods, or placing screens close to the eyes, can have a significant negative impact on eye health. 80% of American adults use digital devices for more than two hours a day. About 59% of them suffer from eye strain symptoms due to constant exposure to blue light.

Do blue light glasses help reduce eye strain?

 

Blue light glasses help protect the eyes from strain caused by excessive exposure to blue light. So, if you spend a lot of time in front of digital devices and notice dry eyes or a feeling of fatigue, wearing blue light glasses can help alleviate these problems. Using these glasses may also help you get better sleep, as blue light lenses filter this type of light and reduce its negative effects without affecting the clarity of vision.

Why is blue light harmful? 

 

Prolonged exposure to blue light can negatively affect eye health. Despite the many attempts by humans to reduce screen time, this has become difficult, as the use of electronic devices has become an integral part of our daily lives. All the devices around us emit blue light, making it difficult to avoid.

***Types of blue light glasses lenses:

 

1. **Monofocal lenses**: These lenses feature a wide field of vision, which facilitates clear vision when using screens and devices, and are suitable for people with normal vision.

2. **Bifocal lenses**: These lenses consist of two sections; the upper section is dedicated to focusing on screens, while the lower section helps in reading close-up texts.

3. **Multifocal lenses**: Similar to monofocal lenses, but they do not have clear borders, as they consist of three sections: the upper section is dedicated to distant vision, the middle section is for screens, and the lower section is for reading.

***What are blue light protection glasses?

 

Blue light protection glasses, or as some know them as anti-blue light glasses, are a type of sunglasses and medical glasses. The developers have provided them with lenses covered with a special layer that aims to filter and block blue light. These lenses are very effective in protecting against many of the problems that we may be exposed to daily as a result of direct exposure to light for long periods, which is not limited to sunlight only, but also includes:

- TV screens

- High-intensity lights

- Computers

- Mobile phones and tablets

How can you make sure that the glasses protect against blue rays?

 

Many people wonder how to check the effectiveness of blue-ray protection glasses. You can do this easily byFor the following steps:

1. Bring your mobile phone and turn on the flash feature.

2. Point the flash directly at the lens.

3. If the lenses are equipped with a blue light protection layer, you will notice that the light appears less bright

**How ​​does a screen protector protect the eye from blue light?**

 

Given the importance of the TV in every home for adults and children, screen protectors have been designed to protect the eye from blue light. These protectors are made of a special layer that aims to reduce potential damage to the eye in the long term. These protectors work according to the following mechanism:

1. **Blue light filtering:** The protective layer in the screen protector has a light filtering feature, which allows light to pass selectively. This reduces the amount of blue light that reaches the eye, which contributes to eye comfort and significantly reduces eye fatigue and stress.

2. **Improving visual comfort:** By reducing the amount of blue light, the protector improves eye comfort, especially when sitting for long periods in front of the screen. This helps reduce the chances of headaches and dry eyes.

3. **Glare Reduction:** There are types of screen protectors designed with a protective layer that contains a glare reduction feature, which improves vision, increases eye comfort, and reduces visual stress.

***Signs that require a visit to the doctor***

 

If you are one of the people who use screens on a daily basis at work, school, or other, it is important to make an appointment with an ophthalmologist if you suffer from the following symptoms:

- Frequent bouts of eye strain.

- Eye strain that lasts for several days.

- Recurring symptoms of dry eyes for long periods.

- Decrease in the quality of your vision.

- Blurred vision.

*******Best Brands of Blue Light Blocking Glasses******

 

There are many brands of blue light blocking glasses that offer you various options for high-quality glasses. Which include:

1- Curx

2- Cascata

3- Romantic

Who are the people who need blue light blocking glasses?

 

These glasses are needed by individuals who are exposed to sunlight and electronic devices for long periods in their daily lives, whether at work, school, or even at home. This is not limited to adults only, but includes all age groups, including children. Continuous exposure to these rays can lead to many visual problems, such as:

- Poor eyesight

- Eye inflammation

- Retinal damage

- Cataracts

Therefore, it is important to be careful to wear blue light protection glasses, whether sunglasses or medical, to protect your eyes permanently.

**Types of blue light protection glasses**

The types are related to the lenses and not the glasses themselves, as any sunglasses or medical glasses, regardless of their design, can easily be replaced with anti-blue light lenses by an optician. There are three types of these lenses, which differ in color and degree of protection, making it easier for you to choose the most suitable for your daily lifestyle.

**Transparent lenses** are usually used in medical glasses, as they protect the eye and reduce the intensity of blue light by up to 40%. Therefore, they are suitable for children, the elderly, and people who are not exposed to screens or light for long periods during the day.

**Yellow lenses** are the most common among different types of glasses, as they are characterized by their ability to adapt to bright light, blocking up to 75% of rays. Therefore, they are ideal for use during the day.

**Orange lenses** These lenses are commonly used by people who work in electronic fields or who are exposed to blue rays for long periods during the day. They are also suitable for people who need to be exposed to sunlight throughout the day, such as engineers, sailors, and drivers. These lenses are highly effective in blocking about 99% of light rays, and can be easily installed in sunglasses and medical glasses, although they may be a bit expensive.

What are the most prominent benefits of blue light protection glasses?

 

The main benefits of blue light protection glasses are their ability to protect the eyes from harmful rays, which contributes to providing comfort during exposure to them without causing any harm. The most important of these benefits are:

**Eye protection** Lenses equipped with a filter layer for bright light resulting from strong lighting help maintain healthy vision, reducing the risk of its weakening due to continuous exposure to blue rays. So, you can find that the best eyeglasses available in the market have anti-blue light lenses, in addition to sunglasses.

**Reducing the feeling of stress** Before you make sure that the stress you feel is due to exposure to blue light, it is preferable to consult an ophthalmologist to make sure whether the main reason is eye damage, or if there are other health reasons that lead to this feeling.

If blue light is the reason behind your constant feeling of fatigue and stress, protective glasses are the ideal solution to this problem. It is also important to take regular breaks while working under the influence of light.

### Reducing headaches** Headaches resulting from eye strain are one of the most common and annoying symptoms, as you always feel severe pressure, which affects your ability to focus, communicate and even move. If you suffer from these symptoms, it is recommended to wear glasses that reflect light while you are exposed to it during the day.

**Blue light filter lenses** These glasses contain lenses equipped with a special layer that absorbs or filters blue light before it reaches the eye, and this layer is known as the "blue light filter".

- **Blue Light Absorption**: The lenses absorb short-wavelength blue light, which ranges from 380-500 nanometers, which is the part that causes the most eye strain.

- **Blue Light Reduction**: The lenses reduce the amount of blue light that reaches the retina, which reduces theHarmful effects such as visual fatigue and insomnia.

- **Maintaining natural light levels**: These lenses help maintain natural light levels, which contributes to improving visual comfort.

**. Clarity-enhancing technologies** Glasses contribute to improving the quality of vision through a range of technologies built into the lenses:

- **Reducing glare:** The lenses help reduce the reflection of bright light from screens and electronic devices, providing greater comfort for the eyes while focusing for long periods.

- **Enhancing contrast:** Thanks to the use of blue light filters, the contrast between colors on the screen is enhanced, making texts and shapes clearer and easier to read.

****Tips for choosing the best medical lenses to protect the eyes from blue light****

1- Choose medical lenses that rely on advanced technology to filter blue light ** When choosing blue light protection glasses, it is preferable to choose those that rely on advanced technology to filter this type of light. This technology helps reduce its harmful effects on the eyes, which helps protect vision and reduce eye strain.

2- Check the blue light filtering efficiency**Make sure that the lenses provide a high efficiency in filtering blue light, without negatively affecting the natural color vision. This contributes to enjoying clear vision without any distortion.

3- Make sure to provide comprehensive eye protection from ultraviolet rays****In addition to protection from blue light, it is preferable to choose lenses that provide comprehensive eye protection from ultraviolet rays, which helps maintain overall eye health.

4- Choose lenses with additional features** Some additional features can provide an improvement in the viewing experience and eye comfort. Look for lenses with scratch and fingerprint resistant coatings, which ensure clear vision and reduce negative effects on the lenses.

5- Check user experiences and reviews** Before making your final decision, it is important to read user experiences and reviews available online about the lenses you are considering purchasing.

6- Check for a warranty** Make sure that the lenses you choose come with a warranty that covers any problems that may arise.

**Blue Light Night Glasses Tests (Amber and Red Lenses)**

 

The type and amount of sleep we get is affected by our exposure to blue light in the evening or night. It is best to use red lenses that completely block blue and green light up to 550nm, or light amber lenses that completely block blue light. Your body can get adequate levels of blue light and maintain a healthy circadian rhythm by wearing two different types of glasses at different times of the day.

**Transmittance Spectrum Report** The transmittance spectrum report is the only reliable way to determine the effectiveness of your night glasses. Make sure the test you get is done by a certified spectrometer, and ask the company you are buying from for guidance. If the lens is red, it should block 100% of blue and green light up to 550nm. If it is amber, it should block 100% of blue light. Anything less than that will not produce effective night glasses or improve your sleep quality.

**Square Test** In this assessment, you should wear blue light glasses and focus on the blue and black squares. If both squares appear black, this indicates that your glasses have completely blocked blue light.

**Red-Green-Blue Chart Test**

 

You can also look at a chart that includes red, green, and blue colors while wearing blue light glasses, and check if the blue area is completely blocked. It should be noted that this test will not be effective with daytime glasses, as they do not completely block blue light. Therefore, this test is not suitable for assessing blue light protection during the day, but it can give you a good idea of ​​the effectiveness of sleep glasses at night.

****Tips to reduce blue light exposure:

1. **Use blue light glasses**: These glasses help protect your eyes from the rays emitted by electronic devices.

2. **Reduced screen time before bed**: It is preferable to reduce the time spent in front of digital screens in the hours before bed.

3. **Adjust screen brightness**: It is recommended to use low brightness settings to reduce eye strain.

4. **Enable Night Mode**: Try using Night Mode on your devices to reduce the impact of blue light.

5. **Take regular breaks**: Follow the 20-20-20 rule, which states that after every 20 minutes of looking at the screen, you should look at something 20 meters away for 20 seconds.

6. **Do eye exercises**: These exercises help relax the eye muscles and relieve dryness.

7. **Consider general eye health**: In addition to using blue light glasses, you should maintain eye comfort by using moisturizing drops, staying away from screens at safe distances, and consulting a doctor to choose the right glasses.