how to use day night feature


The day and night feature allows you to set different color temperature and brightness for day and night, and automatically switches the setting for you at sunrise and sunset time.

How to enable day night feature?

  1. Turn on the switch of day night 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. Please choose the way you like. 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 edit the sunrise/sunset time in the edit box, and then click the Confirm button to save the setting.

Day and night smotth transition allows you to specify how early or late the transitions start, relative to sunrise and sunset. It’s best to understand how it works by looking at some examples:

  • 0 Hours
    • Day-time transition starts at sunrise and ends precisely at sunrise
    • Night-time transition starts precisely at sunset and ends at sunset
  • 1 Hours
    • Day-time transition starts at sunrise and ends 1 hours after sunrise
    • Night-time transition starts 1 hours before sunset and ends at sunset
  • 2 Hours
    • Day-time transition starts at sunrise and ends 2 hours after sunrise
    • Night-time transition starts 2 hours before sunset and ends at sunset

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.

focus setting

    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.

focus activated

    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

About Blue light

Blue light is a range of the visible light spectrum, defined as having a wavelength between 450−495 nm. This short wavelength means that blue light is a type of high-energy visible light, defined as having a wavelength between 380 and 500 nm. Violet, indigo, and some blue-green light are other types of high-energy visible light.

Blue light sources are becoming increasingly common in today’s environment. Exposure to blue light comes from a variety of technologies including computers, smartphones, televisions, and lights.

Effects of blue light on eye health

people are exposed to blue light via everyday technology, Blue light exposure has been shown to impact health. Some studies also suggest that chronic blue light exposure may represent a risk for the development of age-related macular degeneration and other pathologies. Animal studies have shown that age-related macular degeneration can be induced by blue-light exposure. One epidemiological study has also shown a positive correlation between sunlight exposure – a natural source of blue light- and increased risk of early age-related macular changes in humans. However, this particular association of effects from blue light is difficult to assess in humans and warrants further study. Unfortunately, there are no studies that measure the effect of chronic blue LED exposure on age-related macular degeneration in humans as this is relatively new technology

Effects of blue light on sleep and circadian rhythm

Natural exposure to blue light during the daylight hours boosts people’s energy, alertness, and mood. However, elongated exposure to the waves transmitted through screen devices during the evening can disrupt circadian rhythm and cause various health effects including a disruption in normal sleep schedules. Scientists believe this is caused by blue-light-sensitive intrinsically photosensitive retinal ganglion cells suppressing the production of melatonin and/or stimulating the suprachiasmatic nucleus of the hypothalamus

How to avoid the effects of blue light

More than half of U.S. adults – 60 percent – spend a minimum of six hours a day, every day on phones, tablets, and computers, so it’s important to practice good habits to keep your eyes safe from blue light

  1. Take regular breaks
    1. The American Optometric Association recommends that for every two hours of looking at the computer screen, you should take a 15-minute break. During this time you should blink, close your eyes, and allow them to rest and re-lubricated
  2. Use blue light reduction glasses
    1. Get fitted for blue light filtering lenses to block the penetration of blue light from computers and digital devices. They’re available for prescription and non-prescription glasses.
  3. Stop using all devices one hour prior to sleep
    1. Don’t take phones and tablets to bed. The blue light from your phone’s display is more likely to keep you awake than the incandescent lamp on your bedside table
  1. blue light filter

CareUEyes is an eye care software with blue light filter ,screen dimmer and bread minder(rest timer). This software provides eye protection for those who use their computer continuously for hours. Using this eye care software, you will be able to apply blue light filter to the computer screen in order to reduce eye strain. You can manually adjust the display color temperature and brightness to apply the blue light filter and relax your eyes. Apart from that, it also comes with 8 different predefined filters based on various activities and you can apply them to your screen with just a click.

CareUEyes can automatically filter the blue light and make the screen look warmer and comfortable to the eyes so that your eyes do not feel tired. You can choose many presets and customize them for the blue light setting such as normal, smart, office, game and night etc

screen brightness

You can download CareUEyes from