Visual fatigue is a collection of symptoms: eye pain, soreness, blurred vision, and decreased attention. Its causes are multi-factorial - regulating tension, reduced blinking, light adaptation conflicts, and light quality stimulation. The chain is long, so no single product can "cure" it.
Evidence-based intervention combination: Eye rhythm (20-20-20) → ambient light matching → screen parameter setting → device-level light quality optimization. Hujingtie is on the fourth layer, addressing the "light quality and reflection" aspect.
A quick overview of key terms
Visual fatigue
Visual fatigue (eye fatigue) is a comprehensive symptom that occurs after prolonged close-range use of the eyes, including eye distension, eye soreness, blurred vision, and decreased attention. The causes are multi-factorial. ... This page focuses on: Visual Fatigue Topic: Cause Chain and Combined Intervention
Ciliary muscle
The ciliary muscle achieves focal length adjustment (adjustment function) by changing the curvature of the lens. Prolonged close-range eye use keeps it tense continuously, which is the core link in visual fatigue and pseudo-myopia. ... This page focuses on: Visual Fatigue Topic: Cause Chain and Combined Intervention
Blink frequency
The blink rate refers to the number of blinks per minute. It drops significantly when concentrating on screen use (from 15 to 20 times per minute to around 5 times per minute), leading to accelerated evaporation of the tear film and dryness. ... This page focuses on: Visual Fatigue Topic: Cause Chain and Combined Intervention
Dry eye
Dry eye is a multifactorial ocular surface disease, characterized by dryness, foreign body sensation and burning sensation. It is highly prevalent among screen users. One of the core mechanisms is unstable tear film. ... This page focuses on: Visual Fatigue Topic: Cause Chain and Combined Intervention
Related reading
- A Guide to Eye Use during Long Online Classes: Three Dimensions: Devices, Lighting, and Habits
- Circularly Polarized Light and Visual Comfort: Starting with a Controlled Experiment