Eyeglass frame and face should be consistent to avoid side leakage

There are various types of eye and face protection equipment available, each designed to protect against different hazards. These products can be categorized into nine main types based on their protective functions: dust protection, water resistance, impact resistance, heat resistance, electromagnetic radiation protection, radiation shielding, chemical splash protection, sand resistance, and glare reduction. Choosing the right type is essential for ensuring safety in different working environments.

Use of Welding Glasses and Masks

According to reports, electro-ophthalmia (a type of eye injury caused by exposure to intense light) is a common issue among workers in industrial and mining sectors during welding tasks. This often occurs due to improper selection of protective eyewear. To prevent such incidents, operators should follow these key guidelines when using protective glasses and masks:

1. Always ensure that the glasses and masks have been certified by relevant authorities before use.
2. Choose the correct size and fit to avoid them slipping or shaking during work, which could compromise their effectiveness.
3. The frame of the glasses should fit snugly against the face to prevent light from entering the sides. In certain cases, side shields or anti-glare lenses may be necessary.
4. Avoid exposing the mask or glasses to moisture or pressure, as this can cause deformation, damage, or light leakage. For welding masks, insulation is crucial to prevent electric shocks.
5. Replace the protective lens of mask-type goggles at least every 8 hours. If the filter is damaged by sparks or splatter, it should be replaced immediately.
6. When using combined lenses and filters, ensure that the refractive power of both is the same to maintain clear vision.
7. For air-fed masks or those used with dust and gas respirators, strict adherence to maintenance and usage guidelines is required.
8. If the lens becomes fogged due to moisture from the environment or the operator’s breath, consider the following solutions:
- Apply an anti-fogging agent like fatty acid or silicone to the lens surface to spread out the mist.
- Use a surfactant-coated (such as PC resin) lens to absorb the moisture.
- For double-lens masks, create a vacuum between the two glass layers to reduce fogging.

Use of Anti-Electromagnetic Radiation Eyewear

Electromagnetic radiation is invisible, silent, and intangible, but certain frequencies—like microwaves—can cause a warming sensation. Prolonged exposure can lead to health issues with a long latency period, making early protection critical. Here are some important practices for using anti-electromagnetic radiation eyewear:

1. Identify areas where microwave radiation exceeds safe limits and post warning signs. Workers entering these zones must wear shielding gear and anti-microwave glasses.
2. Select shielding suits and glasses based on the frequency of the radiation source and the intensity at the worksite.
3. Prefer anti-microwave glasses that offer full eye protection to block microwave diffraction.
4. Avoid contact with oils, acids, alkalis, or other contaminants, as they can degrade the shielding performance.
5. In addition to wearing protective gear, avoid looking directly at radiating devices such as feeding horns, open waveguides, or reflectors. Keep a safe distance from the radiation source and ensure proper shielding if possible.

China Labor Insurance Network