Eye Protection

Eye protection is designed to protect the eyes from mechanical, physical, and chemical injuries. The eyes are vulnerable, and damage can lead to permanent vision loss. That is why wearing safety glasses is mandatory in many work situations.

Safety glasses provide adequate protection only when they are appropriate for the risks of the job and are worn correctly. Relying solely on a CE marking or standard is insufficient. Fit, comfort, and visual clarity also play an important role.

Eye Protection and Workplace Risks

The choice of eye protection must always be based on the risks associated with the work. Employers must determine what protection is needed and continue to assess and monitor this choice.

When eye protection is not properly suited to the work or the user, it creates a false sense of security. This increases the risk of injury.

General requirements for safety glasses

Safety glasses must not only provide protection but also be comfortable to wear. Key considerations include a good fit, high comfort, and clear optical quality.

The international standard EN ISO 16321-1 sets stricter requirements for, among other things, impact resistance, optical clarity, comfort, and protection zones around the eyes. This ensures greater safety and less fatigue while working.

New Standard 

The revised standard EN ISO 16321-1:2022/A1:2025 will take effect in November 2025. This amendment clarifies and corrects the existing standard.

The most significant change concerns the protection zones around the eyes. These are now better aligned with six international head shapes. As a result, safety glasses fit different face shapes more effectively, and testing and certification are more reliable.

The protection levels themselves do not change, but the standard is more practical and easier to apply.

When are glasses considered safety glasses?

Glasses are considered safety glasses when they comply with the applicable standard and are CE-certified. EN 166 will remain valid for existing certificates until November 2025. After that, new products may only be certified in accordance with EN ISO 16321-1:2022/A1:2025.

Both the lenses and the frame must meet the requirements before the CE mark may be applied. Customization remains necessary within companies.

Optical Quality and Comfort

When safety eyewear must be worn continuously, high optical quality is essential. The eyewear must not cause distortion or distortion.

Design plays an important role here. Modern, slightly curved glasses offer a larger protective area and fit the face better. Factors such as UV protection, impact class, and choice of materials must also be tailored to the risks of the job.

Fit and Adjustment

No two faces are alike. That is why safety glasses must be easily adjustable. Metal frames can be precisely adjusted and retain their shape. Plastic frames must have metal core springs to remain properly adjusted.

Safety glasses that are distributed without being fitted are not recommended. Having both plain and prescription safety glasses fitted by an optician contributes to comfort, protection, and wearer acceptance.

Practical Guidelines from Real-World Experience

For daily use of safety glasses, the following approach has proven effective:

• One model for both men and women, available in multiple sizes
• Lightweight frames with good side protection
• Optical Class 1 for clear, distortion-free vision
• Scratch-resistant, anti-reflective, and UV-resistant lenses
• A fixed light tint or multiple pairs of glasses for higher tint requirements

For many industrial applications, safety glasses with CE marking in accordance with EN ISO 16321-1 and an impact class of D are suitable.

Over-the-glasses and chemical-resistant goggles

Over-the-glasses (OTG) and acid-resistant goggles can provide additional protection against splashes or vapors, but are not a substitute for safety glasses.

They are less suitable for continuous use due to their heavier weight and increased risk of skin irritation. Therefore, they are primarily used for visitors or occasional tasks.

Combination systems with snap-on modules for prescription lenses require extra attention, as components may come loose upon impact.

Maintenance of Safety Glasses

Proper maintenance prevents damage and impaired vision. Clean the lenses with lukewarm water and a small amount of dish soap. Do not use hot water, as this can damage coatings. Dry the glasses with a clean, soft cloth and regularly check the lenses and frame for damage.