The general rule for adjusting screen brightness is to match it with the brightness of the surrounding environment.
In brighter environments, it is recommended to increase the screen brightness for better visibility.
Conversely, in darker environments, it is advisable to decrease the brightness to prevent eye strain.
Not adjusting the screen brightness accordingly can lead to eye fatigue and vision issues.
Since lighting conditions change frequently, it is important to frequently adjust the screen brightness.
Failing to control the brightness of Windows 7 can have negative effects on both eye health and sleep quality.
Light is one of the most important external factors that can affect sleep. It does so both directly, by making it difficult for people to fall asleep, and indirectly, by influencing the timing of our internal clock and thereby affecting our preferred time to sleep.(External Factors that Influence Sleep)
There are plenty of tutorials on the web for Windows 7 brightness control. But they can’t help you solve the problem, because the brightness adjustment feature of Windows 7 is not always displayed in the control panel, and sometimes even if we update the display driver, the brightness cannot be adjusted.
This is really annoying, but by using the third-party application CareUEyes, you can easily adjust the brightness on Windows 7.
Control screen brightness on Windows 7 the easy way
CareUEyes is an eye protection software that can easily help you adjust the brightness on Windows 7. You can use the brightness slider to adjust the brightness. Swipe to the left to decrease the brightness, and to the right to increase the brightness.
CareUEyes also supports hotkeys to adjust the brightness. You can customize hotkeys on CareUEyes’ Options page, and then you can use the keyboard to increase or decrease brightness.
CareUEyes has eight preset modes, each of which can set different brightness for day and night. CareUEyes will help you switch the brightness according to the preset sunrise and sunset time. You can directly select the preferred mode or modify the preset brightness by the slider.
In addition, CareUEyes also has a blue light filter feature, which can filter harmful blue light and help you relieve eye fatigue and pain.
Cooperate with taking regular breaks feature to better protect your eyes and prevent eye fatigue.
Step1: Open the windows 7 control panel
Step2: Select “Hardware and Sound”
Step3: Select “Power Options”
At the bottom of the power options window, you will see the “Screen brightness” slider, left and right drag Change brightness slider to adjust the brightness of the display.
On most laptop keyboards, you will find shortcut keys that can quickly increase and decrease brightness. Usually, these keys are function keys (from F1 to F12) and are usually located at the top of the keyboard. If you want to adjust the screen brightness, look for the brightness symbol (usually a logo).
Since the F keys are function keys, you must hold down the Fn key on the keyboard (usually located near the lower-left corner of the keyboard) when you press them to work.