What is the function of goggles?
Under normal circumstances, goggles serve as essential eye protection equipment, with core functions including protection against physical foreign objects, blocking chemical irritants, preventing ultraviolet (UV) damage, safeguarding in medical settings, and ensuring safety during sports activities. A detailed analysis is as follows:

1. Protection against physical foreign objects: Goggles can block solid debris such as dust, sand, and metal shavings from directly impacting the eyes. In environments like construction sites, mechanical processing, and gardening, high-speed flying particles may scratch the cornea or become embedded in the eyeball. Goggles provide a protective barrier through sealed frames and impact-resistant lenses.
2. Blocking chemical irritants: When exposed to acidic or alkaline solutions, chemical fumes, or solvent vapors, goggles prevent these substances from contacting the ocular surface. In laboratory operations, chemical manufacturing, or disinfection procedures, splashes into the eyes can cause burns or inflammation. The impermeable design of goggles prevents penetration of hazardous chemicals, protecting the conjunctiva and cornea from injury.
3. Prevention of UV damage: Specialized UV-protective goggles filter out UVA and UVB rays. During prolonged outdoor work, skiing, or mountain climbing, intense UV radiation accelerates lens aging and increases the risk of cataracts and macular degeneration. Goggles equipped with special lens coatings absorb UV radiation, reducing photochemical damage to the eyes.
4. Protection in medical settings: In healthcare delivery and public health emergencies, goggles act as barriers against droplets, bodily fluids, and secretions. Healthcare workers or individuals at high risk can wear goggles to prevent pathogens from entering through the ocular mucosa, thereby reducing infection risk—this protection is particularly crucial in infectious disease control.
5. Sports safety assurance: Sport-specific goggles are designed according to the demands of different activities. For example, in contact sports like basketball and football, they help prevent blunt eye injuries from physical impacts. Skiing and cycling goggles offer windproof and anti-fog features, maintaining clear vision by minimizing airflow and moisture interference.
When selecting goggles, users should consider the intended application, ensuring a snug facial fit and scratch-free lenses. Lightweight UV-blocking models are suitable for daily outdoor use, while specialized tasks require goggles meeting professional safety standards. Proper wearing is essential to fully realize their protective benefits.