If the student feels that views the screen for too long. The student should blink, more often or eyes by eye from the computer after the computer for about 20 minutes.
If a student feels that looking at the screen for too long. Students should blink more often by sight or stay away from the computer after using the computer for about 20 minutes.
If students feel that looking at the screen for too long. Students should blink more often or eyes by losing sight of the computer after using the computer for 20 minutes.