Safety Glasses

Understanding EN 166 and the ISO Transition

EN 166:2001 remains the core European standard for work safety glasses until 2029, when ISO 16321 fully replaces it. Current EN 166 certifications stay valid through that transition. The standard tests mechanical strength (impact resistance), optical quality (distortion limits), and durability (scratch/fog performance). Manchester Royal Eye Hospital data shows 90% of workplace eye injuries could have been prevented with proper protection. HSE PPE at Work Regulations 2022 require employers to provide suitable eye protection wherever there's risk to sight.

Lens Types: Match Your Environment

Clear lenses suit indoor use and low-light conditions. Many include UV protection that outperforms tinted lenses without UV coatings. Smoke lenses reduce glare in bright outdoor work – construction sites, highways, outdoor loading bays. Yellow lenses adapt to variable light, ideal for forklift drivers moving between warehouses and yards or workers transitioning between indoor/outdoor tasks. Tinted safety glasses handle intense sunlight and reflective surfaces. The most common mistake? Choosing smoke lenses for indoor work, which reduces visibility unnecessarily.

Coatings and Surface Treatments

Look for K and N markings under EN 166. K indicates anti-scratch coating – extends lens life in abrasive environments like metalworking or demolition. N marks anti-mist treatment, critical for temperature transitions (cold stores, outdoor winter work, hot kitchens). Options in this collection include anti-fog and anti-scratch models; verify exact coatings on the product page. Without anti-fog, safety glasses fog during physical work or temperature changes, and workers remove them – defeating the purpose.

Bulk Buying and Replacement Strategy

Low unit cost (from £0.72 ex. VAT) makes these practical for: • Visitor specs at site entry points • Backup pairs at individual workstations • Temporary or contract workers • Short-term projects without tracking systems. Government Labour Force data (2021) recorded 4,410 workplace eye injuries, with 512 serious cases including sight loss. Only 40% of injured workers wore eye protection during accidents. Keeping spare safety glasses accessible increases compliance.