blue light filter for windows 11

The increasing reliance on digital devices has raised concerns about exposure to blue light, also known as high-energy visible (HEV) light, emitted by screens, which can have adverse effects on our health.

Consequently, the use of blue light filters has become crucial in today’s digital age.

This article delves into the advantages of using a blue light filter for your PC, offering an in-depth analysis of CareUEyes, one of the most popular software options.

Additionally, it provides guidance on enabling blue light filtering in Windows 11, including the night light feature and a more optimal alternative app: CareUEyes.

Windows 11 night light: Blue  light filter for Windows 11

The latest version of Windows, Windows 11, now includes a feature called night light.

Its purpose is to minimize the amount of blue light emitted from the screen, which can cause eye strain and disrupt sleep patterns.

The night light feature works by adjusting the color temperature of the screen to reduce blue light and enhance warmer colors, resulting in a redder and warmer display.

This is beneficial to eye health and can lead to more regular sleep cycles for those who use it. Additionally, users have the ability to customize and schedule the night light feature according to their preferences.

How to enable the night light feature

To enable the blue light filter in Windows 11, you need to perform the following steps:
1. Click on the Windows icon on the taskbar. Then select the Settings cog. (You can also open the Settings app using the shortcut keys: Win + I)

2. When Windows Settings appears on the screen, click on the System option.


3. Click on the “Display” option.


4. Click on the night light settings.

5. Toggle the night light switch to On.


6. By sliding,  you can adjust the color temperature as per your requirement.

Schedule night light

7. If you want to schedule the night light to turn on and off automatically at specific times, toggle the Schedule night light switch to On and click on the Set hours button.


8. Modify the night light turn on and turn off time as per your requirement.

9. If you need to turn on and off the night light automatically according to the local sunset and sunrise time, toggle the Schedule night light switch to On and click on the Sunset to sunrise button.


Disadvantages of the night light mode

1. The first disadvantage of Windows 11 night light mode is that it changes color accuracy. If you are using the night light feature for the first time, your eyes may not get used to it, but after a while, your eyes will slowly get used to it. However, when you are editing videos or photos with Windows, you may need to turn off the night light to maintain a high level of color accuracy. But it is a bit of a hassle to manually turn on and off the night light frequently.

2. The second disadvantage of Windows 11 nightlight mode is that you can only set one color temperature mode. But people may need different color temperatures in different scenarios, for example, people can accept lower color temperature when dealing with emails or reading web pages, but usually don’t want the color of the screen to be affected too much when playing games or watching movies, so it will be easier to use if nightlight can set multiple color temperature modes.

3. The third disadvantage of Windows 11 nightlight mode is that it does not support hotkeys to adjust color temperature. According to the usual steps, you need to go through six steps to open the color temperature adjustment.

4. The fourth disadvantage of Windows 11 night light mode is that it can not set different color temperatures for day and night, you need to manually adjust the color temperature again at sunset and sunrise.

For people who just want to improve their sleep, they can turn on the night light only after sunset, but for people who want to reduce blue light to protect their eyes, they also need to turn on the night light feature during the day, but usually, they don’t need to filter as much blue light during the day as they do at night, so it’s necessary to set different color temperature for day and night.

A more perfect third-party alternative

If you want to overcome the above disadvantages of Windows 11 night light, you can install a third-party software called CareUEyes. CareUEyes filters blue light by adjusting the color temperature just like Windows 11 night light, but it not only supports Windows 11 but also supports installation on XP, Windows 7, and Windows 8.

CareUEyes is easier to use than the night light feature

1. Eight built-in color temperature modes for you to choose

CareUEyes has eight modes for you to choose from, you just need to experience each mode one by one when you use it for the first time, and you can find the most suitable model for you.

blue light filter windows 10




2. Convenient and quick to adjust the color temperature

If you are not satisfied with the default mode, you can either adjust the color temperature through the slider on the main interface of CareUEyes or customize the hotkeys to adjust the color temperature.

blue light filter windows 10

Blue light filter windows 10

3. You can set different color temperatures for day and night

You just need to turn on the sunrise and sunset features of CareUEyes to set different color temperatures for day and night, and CareUEyes will automatically adjust the color temperature for you at the sunrise and sunset time you set.

blue light filter

4. Powerful customization rules

You can customize the rules to enter the specified mode when using an application, for example, you can specify to pause the color temperature adjustment when using Photoshop, i.e. enter Pause mode, and enter the game mode when running the game CS: GO.


5. More eye protection features

CareUEyes is not just a blue light filter, it can also adjust the screen brightness, focus, and remind to take regular breaks, it is a multi-feature eye protection software.

Change brightness on Windows 10

take a break
take a break


The Windows 11 night Light is a simple blue light filter, if you need a more powerful and easy-to-use blue light filter with more comprehensive protection for your eyes, recommend you to install CareUEyes.



how to use MagicX feature

What is the MagicX feature of CareUEyes?

MagicX is a new window magic feature in CareUEyes that allows you to darken or grayscale any window. The dark mode is achieved by inverting the window colors, while the grayscale mode makes the window appear similar to a Kindle e-book.

How to use the MagicX feature in CareUEyes?

You can enable the MagicX feature by following these steps:

1.  Enable the “Enable Magic Window” option.

2. Enable the “Display Magic Toolbar” option.

Move the cursor to the top edge of the screen (default position) to display the magic toolbar.

Clicking “Dark” will switch to dark mode, while clicking “Gray” will switch to grayscale mode. Clicking “Dark” or “Gray” again will exit the respective interface style.

When a window appears darker or grayscale, a close button will be displayed. You can click on the close button on the right side of the toolbar to restore the original color.

Alternatively, you can disable the toolbar and use hotkeys to switch between window dark mode or grayscale mode.


stay focus

    Now is the Internet age. Every day, there are instant messages, emails, and short messages that interfere with our work. When reading articles, we can’t be interfered with by other information. In order to improve reading efficiency, we need to force ourselves to stay focused and avoid other content dispersion. Our attention, but in addition to forcing ourselves to stay focused, is there a simpler way?
    CareUEyes’ Focus function can help you. It is a unique feature of CareUEyes Pro that prevents you from interfering with other window content to keep you focused.

    You can pre-set the height of the focus area, the transparency of the focus area, and the color of the focus area. When you are reading, you can activate it by hotkey.

    When the mouse moves, the focus window will also follow the mouse movement, so that the center point of your mouse is always Focus, and the focus function can be superimposed with the Editing Mode or Reading Mode of CareUEyes Pro, which allows you to enter a more focused state.


blue light filter for pc

Understanding the Benefits and Choosing the Right Software

With the increasing dependence on digital devices, exposure to blue light has become a major concern. Blue light, also known as high-energy visible (HEV) light, is a type of light emitted by screens and can have a detrimental effect on our health. This is why blue light filters have become so important in today’s digital age. In this article, we will explore the benefits of using a blue light filter for PC and provide an in-depth look at one of the most popular software options, CareUEyes.

blue light cause eyestarin


The Harmful Effects of Blue Light

Blue light is known for its high energy and short wavelength, making it particularly harmful to the human eye. Prolonged exposure to blue light has been linked to a variety of health problems, including:

  1. Eye strain: The blue light from screens can cause eye strain and discomfort, especially when you are working for long hours in front of a computer.
  2. Sleep disturbances: Blue light suppresses the production of the sleep hormone melatonin, making it difficult to fall asleep and stay asleep. This can lead to sleep disturbances and negatively impact overall health.
  3. Headaches: Prolonged exposure to blue light can cause headaches and migraines, especially in individuals who are sensitive to light.
  4. Digital eye strain syndrome: This is a condition that results from prolonged use of digital devices and is characterized by symptoms such as eye strain, fatigue, and blurred vision.eye pain

Why You Need a Blue Light Filter for  PC

A blue light filter for PC can help to reduce the harmful effects of blue light and protect your eyes. By filtering out blue light, you can reduce eye strain and headaches, improve your sleep, and protect your overall health. A blue light filter also makes it easier to work for long hours in front of a computer, making it a must-have tool for anyone who spends a lot of time in front of a screen.



Choosing the Right Blue Light Filter Software

With so many blue light filter software options available, choosing the right one for your needs can be a daunting task. However, by considering a few key factors, you can find the perfect software for your needs. Here are some factors to consider when choosing a blue light filter software:

  1. Customization options: Look for a software that allows you to adjust the level of blue light filtering to your preference. This will give you more control over the level of protection you receive.
  2. Compatibility: Make sure the software is compatible with your operating system and device. Some software may only work with Windows or Mac, while others may not be compatible with your specific model of computer.
  3. Price: Some blue light filter software options are free, while others are paid. Consider your budget and your needs when choosing between free and paid options.

CareUEyes: A Comprehensive Blue Light Filter Solution

CareUEyes is a comprehensive blue light filter software that is designed to protect your eyes from the harmful effects of blue light. This software is a great option for anyone looking for a simple, easy-to-use solution that offers a wide range of customization options.

Features of CareUEyes:

  1. Customizable blue light filter: CareUEyes allows you to adjust the level of blue light filtering to your preference, giving you greater control over the level of protection you receive.
  2. Eye protection mode: This mode allows you to set a schedule for when the blue light filter will be active, helping you to protect your eyes even when you are not actively using your computer.
  3. Screen break reminders: CareUEyes also features screen break reminders that encourage you to take regular breaks from your computer, reducing the risk of eye strain and other related symptoms.
  4. Easy-to-use interface: CareUEyes has a simple and intuitive interface that makes it easy to use, even for those who are not tech-savvy.
  5. Compatibility: CareUEyes is compatible with Windows and Mac operating systems, making it a versatile option for a wide range of users.
  6. Price: CareUEyes is available as a free download, making it an affordable optionfor those on a budget. However, there is also a premium version of the software that offers additional features and benefits for a small fee.
  7. User-friendly design: The software is designed with the user in mind, making it easy to use and navigate. Whether you are a casual user or a professional, you will find CareUEyes to be a great solution for protecting your eyes from blue light.

night mode
pomodoro 202020
In conclusion, a blue light filter for PC is a must-have tool for anyone who spends a lot of time in front of a screen. By filtering out harmful blue light, you can reduce eye strain and headaches, improve your sleep, and protect your overall health. CareUEyes is a comprehensive and user-friendly software solution that offers a range of customization options and is compatible with both Windows and Mac operating systems. Whether you are a casual user or a professional, CareUEyes is a great option for protecting your eyes from blue light.


How to use the Focus Blur feature (Hazeover for Windows)

How to use the Focus Blur feature?

The focus blur function of CareUEyes has the same features as hazeover, you can think of it as the Windows version of hazeover.

When the blur window function is turned on, it can automatically blur the background of the foreground window to highlight the front window, which can focus on the working window, let us focus more, and improve productivity. It also has more Many benefits:

● Focus on one thing at a time
● Easily see which window has input focus
● Save time in managing windows

When the function of allowing blurred windows is enabled, CareUEyes may ask you to run it with administrator privileges, please allow it, otherwise the function of blurring windows will not work properly (this is Windows’ permission restriction on windows)

By default, the blur window does not include the taskbar, you can enable it manually

When the transition animation is turned on, switching before the window will slowly blur the background window, and you will not feel abrupt.


Computer Screen Protector For Eyes

Computers have penetrated into every aspect of our lives. Whether in the workplace, at home, or at school, the use of computers is now almost mandatory, and to a certain extent, for many of us, watching the screen is almost inevitable.

eye pain

Computer Related Health Problems

Now apparent that prolonged use can lead to a series of computer vision-related problems, collectively known as computer vision syndrome (CVS) or digital eye fatigue. In fact, just a day spent on the computer for more than two hours, you will have a 90% chance of developing computer vision syndrome (CVS).

Most of us have experienced at least some of the symptoms of CVS. These symptoms include eyestrain, headaches, dry eyes, blurred vision, neck pain. 

In addition to causing CVS, the computer is a notorious blue light emitter, Blu-ray also involves many other health problems. The excessive blue light on the screen can cause eye damage and may play a role in the development of age-related macular degeneration (AMD). It also suppresses sleep and can cause insomnia and disturb your circadian rhythm. If we use a mobile phone or computer before going to bed, it is more likely to cause insomnia.

Therefore, protecting your eyes is vital whenever you use a computer, and you can use a computer screen protector to protect your eyes.

What are computer screen protectors?

The computer screen protectors can reduce blue light, glare and adjust the screen brightness to protect our eyes from electronic screens. They can be physical devices or software.

Anti glare computer screen protector for eyes

The glare of reflection on the computer screen is the one cause of eye strain. The reflection on the computer screen will constantly distract your attention, forcing you to make extra efforts to concentrate and ultimately leading to eye strain.

You can use a high-end anti-glare computer screen to reduce the glare of your computer monitor. The anti-glare filter is available in two frame designs – flat or wrap. The frame you choose depends on your display style and personal preference, and with either of them, you can virtually eliminate most of the glare that is reflected from the screen to your eyes.

Advantages:  It can effectively reduce glare and Ultraviolet rays.

Disadvantages:  Installation is difficult, it is easy to leave annoying dust and bubbles in the installation process, and does not have the effect of filtering blue light.

  1. anti glare screen protector
    anti glare screen protector

    Blue light filter computer screen protector for eyes

The blue light filter screen protector is generally made of acrylic material and adopts a hanging design. You can hang it on your computer screen, which can effectively block blue light and ultraviolet rays.

Advantages: It can filter blue light and ultraviolet light

Disadvantages: Most of the blue light filter protective film will increase the glare of the screen, although the blue light is reduced, you may be troubled by the glare problem. In addition, some screen protection films have poor adhesion to the screen, causing the screen to be blurred and unclear and text and images cannot be seen clearly.

blue light filter screen protector
blue light filter screen protector

Use blue light filter software

CareUEyes is an eye protection software that runs on Windows(supports Windows 11/10/8/7/XP). It has anti-glare, blue light filtering, screen brightness adjustment, and timed reminder features. It is very convenient to use and is used by many companies and governments.

blue light filter for laptop

Compared with the screen protector of the physical device type, CareUEyes is a better choice, its blue light filter function is more powerful and provides more other eye protection functions. It filters the blue light by adjusting the color temperature. As the blue light decreases, the screen becomes warmer.


  1.  You can easily download and install it.

  2. It has eight preset modes, each of which corresponds to eight different usage scenarios, each of which has been preset with a suitable color temperature, and you can switch between the eight modes flexibly.

  3. If you are not satisfied with the preset color temperature, you can also adjust the intensity of the blue light filter according to your needs.

  4. It has sunrise and sunset functions, allowing you to set different color temperatures for day and night, and automatically switch between sunrise and sunset for you.

  5. It can adjust the color temperature of multiple extended displays at the same time, without the need to purchase a separate device for each extended screen.

  6. CareUEyes has the function of adjusting the screen brightness. Improper screen brightness is also a very important cause of eye discomfort. With CareUEyes you can easily adjust the screen brightness.
    screen dimmer for night
  7. The glare occurs because too much light enters your eyes and interferes with your eye management. Adjusting the screen color temperature and screen brightness at the same time can effectively reduce screen glare.

  8. Using the computer for a long time without rest is also an important cause of eye fatigue. It is recommended to follow the “20-20-20” rule to take regular breaks. Turn on the Timer function of CareUEyes to intelligently remind you to take a break.

20 20 20 rule


Don’t forget to blink

Blinking helps to lubricate the eyes, otherwise, it can cause dry eyes. When you stare at the screen for a long time, you will forget the blink of an eye, so we must consciously force ourselves to blink, which is helpful for the health of the eyes. Combined with the 20-20-20 rule.




Conclusion to computer screen protectors for eyes

We can reduce eye fatigue through physical devices, or relieve eye fatigue through habitual changes, but the most convenient way is to use eye care software CareUEyes, because it is more convenient, cheaper, and more effective, hope our article is helpful for you.



screen dimmer for the night

In today’s society, computers have become an indispensable part of our life, work, and study. When you use the computer at night, do you feel eye fatigue, headache, and trouble falling asleep?

blue light cause eyestarin

 A screen dimmer for the night is necessary

Why do computer screens are harmful to our health, especially at night? One important reason is computer screens emit blue light. The brighter the screen, the more blue light is emitted. Blue light can cause eye fatigue and cause sleep troubles.  Research had shown that too much exposure to blue light at night can suppress melatonin production, disrupting our normal body clock and making our brains think it’s still daytime. A screen dimmer is very necessary for all people who use computers at night.

What is the feature of the  screen dimmer for the night

The screen dimmer for the night is a kind of software that can adjust screen brightness and filter blue light. It can help you avoid the damage of bright light to your eyes at night, and avoid the blue light at night from disturbing your normal sleep cycle.

CareUEyes is an excellent screen dimmer app


screen dimmer for night

CareUEyes is a professional brightness controller for PC and laptops,  it supports Windows 11/10/8/7/XP.

CareUEyes can dim all screens, whether desktop monitors or laptop monitors, or a monitor external to the laptop, or your computer is connected to multiple monitors. It is easy to adjust brightness with CareUEyes, you can dim screen brightness between 100% and 20%.

Three ways to reduce screen brightness

The first way, you can drag or click the brightness slider to adjust screen brightness;

screen dimmer for night

The second way, you can adjust brightness in the tray right-click menu;

The third way, you can customize hotkeys, and then use the keyboards to adjust brightness.

screen dimmer hotkey

Automatically dim screen brightness at night

You can set different screen brightness for day and night, CareUEyes will automatically dim screen brightness at night, you only need to set the sunset time.

Reduce blue light and help you sleep

CareUEyes reduces blue light by adjusting the color temperature and enhancing reddish colors, so the computer screen will look warmer.

You can adjust the color temperature with the color temperature slider, sliding to the left to decrease the color temperature can reduce blue light, and sliding to the right to increase the color temperature can increase blue light.

screen dimmer for night.

You can also customize hotkeys to quickly adjust color temperature.

screen dimmer for night

CareUEeys has more features that can protect your eyes 

1. Editing mode

editing mode

Editing mode changes your white screen to black, making it easier on the eyes at night. This feature is very suitable for you to edit or read the text at night because the black background can eliminate most of the blue light and relax your eyes.

2. Remind you to take regular breaks

Screen dimmer for night


How To Enable or Disable Night Light in Windows 10

Night Light, also known as “Blue Light”, is a new feature introduced since Windows 10 Creators Update, which makes your display use warmer colors at night to help you sleep better and reduce eyestrain. In this tutorial we’ll show you how to enable or disable Night Light mode in Windows 10, even when the Night Light setting is greyed out.

How To Enable or Disable Night Light in Windows 10?

  1. Press the Windows + I keyboard shortcut to open the Settings app, and then click on the System icon.

  2. Select the Display tab on the left side. You can then toggle the “Night light” button to On to enable it, or Off to disable it.

  3. If you enable the Night Light feature, you can configure it further by clicking the “Night light settings” link under the toggle.

    There, you can adjust the color temperature by dragging the slider, and set Night Light to kick in when the sun sets and it will automatically get disabled during sunrise. When it’s done, you can click the “Turn on now” button to immediately enable the Night Light feature.

Can’t Enable or Disable Night Light?

Night Light settings is greyed out and you can’t disable or enable it? Here is a quick workaround to resolve this issue. Follow these steps:

  1. Open the Registry Editor and navigate to the following key:
  2. Expand the DefaultAccount key, then right-click and delete the following two subkeys:$$

  3. When you’re done, close Registry Editor and reboot your computer. Open the Settings app and you should then be able to turn Night Light on or off.

CareUEyes FAQ

  1. How to migrate the license code to the new computer?

    1) If the old computer is still in use, please uninstall CareUEyes on the old computer first. If you are not using an old computer, ignore this step.

    2) Send an email to [email protected] for assistance.

  2. How to retrieve the license?1) When you purchase CareUEyes, we sent you the license code by email, so you can search for “CareUEyes free private license code” in your email to find the license code.

    2) If you do not find the license code in your email, please send an email to [email protected] for assistance.

  3. How to adjust the color temperature and brightness?Please refer to this article
  4. How to use Timer?Please refer to this article
  5. How to get the education edition discount?Students and educators are eligible for up to 50% off CareUEyes Premium. You must have a school-specific email address provided by the school that can receive external emails (e.g., please use your school email to contact [email protected].
  6. How to buy CareUEyes without a credit card or paypal?

You can try to pay on this page,  it supports more payment methods.

How to use CareUEyes to adjust the color temperature and brightness

In this article, I will show you how to use CareUEyes to adjust the color temperature and brightness of the screen.

CareUEyes has eight preset modes, these preset modes can make it more convenient for you to use. Each preset mode has been set with the best color temperature and brightness. You do not need to repeatedly adjust the color temperature and brightness to find suitable parameters, just select one of the suitable preset modes.

CareUEyes filters blue light by adjusting the color temperature, the lower the color temperature, the less blue light.

The difference between the eight preset modes


Preset modes
Preset modes


If you need to handle work that requires strict color fidelity, such as Photoshop photos, you can choose pause mode.

This is the first mode preset for all users, it can effectively filter blue light, reduce screen brightness, and it is very comfortable for the eyes in this mode. If you don’t know which mode to choose, use this mode.

Because the game has high requirements on color, the game mode hardly changes the color of the game, but only reduces the screen brightness. It’s just a few tweaks to the brightness, but it’s also more comfortable for the eyes when playing games.

Movies also have relatively high requirements for color, and the movie mode slightly reduces the color temperature and brightness, which does not affect the color of the movie screen.

If you have just started using CareUEyes and are temporarily unable to adapt to the screen color changes in health mode, it is recommended that you use office mode first. After your eyes get used to it, it is recommended to switch to healthy mode, which can filter blue light more effectively and protect your eyes.

Editing mode will invert screen colors, suitable for editing Word or Excel, and programmers writing code. If your editor has a white background, such as Word or Excel, you get a black background after inversion. A black background removes most of the blue light.

Compared with the editing mode of other similar software, CareUEyes’ editing mode is more comfortable, because it is not pure black, but close to dark gray. Too pure black makes the background and text form a strong contrast, and the eyes are easy to get tired.

One disadvantage of editing mode is that the color of the picture will be distorted, but generally you don’t care about the color of the picture when editing the text.

Reading mode turns your screen color into black and white like an e-ink device. It is suitable for use when you are reading text.

If none of the above seven modes can meet your needs, then you can use the custom mode to customize the color temperature and brightness.

How to adjust the preset color temperature and brightness?


Except for the pause mode, other modes can manually adjust the preset color temperature and brightness.

Adjust color temperature

The first way: Drag or click the color temperature slider to the left to decrease the color temperature, and drag or click the color temperature slider to the right to increase the color temperature. The lower the color temperature, the less blue light the screen emits.


Adjust color temperature
Adjust color temperature

The second way:  Set hotkeys to quickly adjust color temperature.

The third way: Select the color temperature value in the tray right-click menu.

Adjust brightness

The first way: Drag or click the brightness slider to the left to decrease the brightness, and drag or click the brightness slider to the right to increase the brightness.

Adjust screen brightness
Adjust screen brightness

The second way: Set hotkeys to quickly adjust brightness.

The thrid way: Select the brightness value in the tray right-click menu.


How to reset the default parameters?

Click the Reset button to reset the color temperature and brightness of the current mode to the default settings.




How to enable sunrise/sunset mode?

1. Turn on the switch of sunrise/sunset mode


2. Click the Config button to open the sunrise/sunset settings page



3. Set the sunrise/sunset time
There are two ways to set the sunrise/sunset time.
The first one is based on geographic location. The program needs to first obtain the address location of the current user, and then automatically calculate the sunrise/sunset time according to the geographic location.


The second is to customize the sunrise/sunset time, you can modify the sunrise/sunset time in the edit box, and then click the OK button to save the setting.

custom time
custom time