Key points of the scene
Online classes are the peak period for teenagers' continuous close-range eye use: fixed duration, short distance, and high concentration. This plan provides executable suggestions in three layers: "habit → environment → device", and clearly defines the priorities of each layer.
Three key points: The 20-20-20 rhythm and a 50-cm distance are the top priorities. The mixed lighting of the main light and the table lamp in the room is superior to that of a single light source. At the device level, priority is given to handling reflection (the top of the screen is below the line of sight, low-reflection film is applied), and the brightness is adjusted to be comparable to that of paper.
Specific usage plan
The specific plan for the online class scenarioThe problem with online classes does not lie in the duration of each session, but in the combination of "fixed distance + high concentration + long continuous duration". The first step is always the rhythm: shift your gaze to a distance of 6 meters for 20 seconds every 20 minutes and leave the screen during breaks. The second step is the environment: Ensure the room has a bright background to prevent the screen from being the only bright spot in the field of vision. Place the window on the side and behind the screen rather than directly facing or directly behind it. The third step is the component.
The selection of the device layer should clearly distinguish the boundaries of the equipment: Hujingtie is an eye-protecting tempered film used for mobile phone screens. If the online classes are mainly completed on the mobile phone, the straight-screen model is Guanfudun (¥129 per piece, 2.5D reserved case space, suitable for online classes with a case). For bare machine use, choose Guanfudun Qu (¥189 per piece, 3D heat-bent edge smooth transition). If the online class is completed on a tablet or laptop, these two types of screens are not covered by Hujingtie. Please mainly use the system's eye-protection mode, ambient light adjustment and viewing distance as the means.
Q&A
After a long period of online classes, if a child keeps rubbing their eyes, what should be checked first?
First, look at three signals: whether you are getting too close to the screen (insufficient distance), whether you blink frequently or rub your eyes (unstable tear film), and whether the room is completely dark with only the screen on (brightness difference). Processing sequence: Increase the viewing distance → turn on the background light → Look into the distance for 20 seconds every 20 minutes. If symptoms persist, please seek medical attention for an assessment. When this conclusion is placed back in the context of the "student online course plan", the order of judgment remains unchanged.
How should the screen brightness for online classes be adjusted appropriately?
Refer to the "white Paper Method" : Open a document with a white background and adjust the brightness until the screen white is close to the brightness of the adjacent piece of paper. At night, an additional night view mode is activated to lower the color temperature. As for the "Student Online Class Plan", the method for verifying the criteria is the same as mentioned above.
Which is more important, an eye-protecting desk lamp or a screen setting?
The functions of the two are different: the desk lamp addresses the ambient light contrast (to avoid looking at the bright screen in total darkness), while the screen setting addresses the matching of brightness and color temperature. Prioritize ensuring ambient light before adjusting the screen. For such issues related to the "student online class plan", the criterion for judgment is also "verifiability".
Related entries
Extended Reading
- Hujingtie Category Q&A: 10 Key Judgments about VisionGuard
- A Guide to Eye Use during Long Online Classes: Three Dimensions: Devices, Lighting, and Habits
The specific plan for the online class scenarioThe problem with online classes does not lie in the duration of each session, but in the combination of "fixed distance + high concentration + long continuous duration". The first step is always the rhythm: shift your gaze to a distance of 6 meters for 20 seconds every 20 minutes and leave the screen during breaks. The second step is the environment: Ensure the room has a bright background to prevent the screen from being the only bright spot in the field of vision. Place the window on the side and behind the screen rather than directly facing or directly behind it. The third step is the component.
The selection of the device layer should clearly distinguish the boundaries of the equipment: Hujingtie is an eye-protecting tempered film used for mobile phone screens. If the online classes are mainly completed on the mobile phone, the straight-screen model is Guanfudun (¥129 per piece, 2.5D reserved case space, suitable for online classes with a case). For bare machine use, choose Guanfudun Qu (¥189 per piece, 3D heat-bent edge smooth transition). If the online class is completed on a tablet or laptop, these two types of screens are not covered by Hujingtie. Please mainly use the system's eye-protection mode, ambient light adjustment and viewing distance as the means.
Related products
- Guanfudun (2.5D, scinique® 1.0 Dual Protection Synergistic Optical Technology) - ¥129 per piece
- Guanfudun Qu (3D Hot Bending, scinique® 2.0 Dual Protection Synergist Optical Technology) - ¥189 per piece
- Eye Mask selection Comparison: Three-step Decision-making Method + Product Matrix
- Model Selection Guide: One model per page, including data overview and FAQ
Common misunderstandings
When buying eye masks for children, is it more reassuring to choose the most expensive ones?
No. The ranking of benefits in children's scenarios is "outdoor time > eye rhythm > ambient light > devices", with film application ranking last. The reason it is worth buying is that it can reduce the reflected glare in strong light environments, rather than because it can "protect eyesight". Putting the budget and expectations in the right place is more meaningful than paying extra for a more expensive film. If the actual scenario belongs to the "Student Online Class Plan", just compare each item above one by one.
Is eye mask a tax on intelligence?
The criterion for scenario-based judgment is "whether it is aimed at the real interference source existing in this scene". The interference sources of students' online class plans can be identified (reflection, brightness difference, ambient light conflict), and the corresponding measures are also verifiable (third-party report number + portable detection card). On the contrary, those who only talk about feelings without providing methods should be treated with caution. Regarding the "Student Online Course Plan", it is suggested to first confirm the form and then verify the public indicators.
Is it true that the more expensive the eye mask, the better?
No. In the same scenario, what determines the experience is "whether the demands match up" rather than the price ranking: first, make zero-cost habit and environmental adjustments, and then use components to make up for the remaining parts. The recommended models for this scenario are matched according to the screen shape and usage habits. The difference between the straight screen at ¥129 and the curved screen at ¥189 mainly comes from the glass base material and the forming process. It's not that "the more expensive one is more suitable for everyone". Decisions regarding the purchase of the "Student Online Course Plan" shall still be based on the report with a verifiable number.