Eye Protection on Trade Sites — Choosing the Right Safety Glasses and Goggles (2026)

The Eye Hazards on a Trade Site

Before you can choose the right protection, you need to be honest about the range of hazards your workers actually face. Eye protection is not a single product — different hazards need different protectors, and a pair of basic safety glasses that's perfect for one task can be dangerously inadequate for another.

• Flying particles and swarf: Grinding, drilling, chiselling, cutting and chipping all throw off high-velocity fragments of metal, stone, brick or wood. These are the single biggest cause of eye injuries in the trades.
• Dust: Cutting masonry, sanding, sweeping and demolition all generate fine and coarse dust that irritates and abrades the eye.
• Chemical splashes: Wet cement and concrete are highly alkaline and can cause serious chemical burns; solvents, adhesives, paints and cleaning chemicals all pose splash risks.
• Molten metal and sparks: Welding, cutting and grinding produce hot sparks and, in welding, molten metal spatter that can burn the eye and surrounding skin.
• UV and optical radiation: Welding arcs emit intense ultraviolet and infrared radiation. Exposure causes "arc eye" (photokeratitis), also known as flash burn — a painful inflammation that can appear hours after exposure.
• Impact from nails and debris: Nail guns, fixings and falling or flying debris can strike the eye with significant force.

The Legal Framework

Eye protection sits within the wider duty to protect workers from harm. Two pieces of legislation are most relevant. The Personal Protective Equipment at Work Regulations require employers to provide suitable PPE — including eye protection — wherever a risk to the eyes cannot be adequately controlled by other means. The Control of Substances Hazardous to Health Regulations (COSHH) apply where the hazard is a substance, such as cement, solvents or chemical splashes, and again require suitable protection where exposure cannot otherwise be prevented.

The critical point that many trade businesses miss is that PPE is the last resort in the hierarchy of controls, not the first. The law expects you to work through the hierarchy in order:

• Eliminate the hazard entirely where you can — for example, ordering materials pre-cut to size so there's no cutting on site.
• Engineering controls come next — on-tool dust extraction, machine guards, screens and barriers that physically contain the hazard.
• Administrative controls such as exclusion zones, safe systems of work and training.
• PPE — eye protection — is what you reach for once the residual risk still can't be removed by the steps above.

In practice, eye protection is almost always needed even after engineering controls are in place, because grinding, cutting and welding can't be made completely hazard-free. But you must still be able to show that you considered the higher controls first. As the employer, you must provide the protection free of charge, ensure it fits and is compatible with other PPE, and make sure it is used and maintained.

Standards and Markings: BS EN 166

All eye protection sold for use on a UK trade site should be CE or UKCA marked and certified to BS EN 166, the standard for personal eye protection. The markings stamped on the frame and the lens tell you exactly what the protector is rated for — and reading them correctly is the difference between adequate and inadequate protection. There are two sets of markings: one on the lens, one on the frame.

Impact Resistance Grades

The impact rating is the most important marking for most trade tasks. It is shown as a single letter, and the rating goes up with the energy of impact the protector can withstand:

• S — increased robustness (basic strength, above minimum but not a high-velocity rating).
• F — low energy impact, a 6 mm steel ball at 45 m/s.
• B — medium energy impact, a 6 mm steel ball at 120 m/s.
• A — high energy impact, a 6 mm steel ball at 190 m/s.

For the rating to apply to the whole product, both the lens and the frame must carry the same letter. A lens rated B fitted into a frame only rated F gives you the lower protection overall. For grinding and high-velocity work, look for B as a minimum; A is reserved for the most demanding impact applications.

Hazard Type Markings

A separate number on the frame tells you which type of hazard the protector is designed to guard against. These matter because a protector designed for dust is not necessarily designed for liquid splash:

• 3 — liquids: droplets and splashes.
• 4 — large dust particles (greater than 5 microns).
• 5 — gas and fine dust particles.
• 8 — short-circuit electric arc.
• 9 — molten metal and hot solids.

Lenses also carry markings for optical class (1 is the highest, suitable for continuous wear) and, where relevant, a shade number for filtering radiation. A protector marked "K" is resistant to surface damage by fine particles, and "N" is anti-fog rated — both useful additions for site work.

Types of Eye Protector

There are four broad families of eye protection, each suited to a different range of hazards. Most trade businesses need a small selection so that the right protector is available for each task.

Safety Spectacles

Safety spectacles look like everyday glasses with side protection. They are comfortable, lightweight and ideal for general impact protection — drilling, light grinding, fixing and general site presence. They do not seal against the face, so they offer limited protection against fine dust and no protection against liquid splash. They are the right default for general impact, but the wrong choice the moment dust or chemicals are involved.

Goggles

Goggles form a full seal around the eye socket, which makes them the correct choice for dust, fine particles and chemical splash. Direct-vented goggles allow airflow while blocking large particles; indirect-vented or unvented goggles are needed for liquid splash and gas. For tasks like cutting masonry, mixing cement or working with solvents, goggles — not spectacles — are the appropriate protector.

Face Shields and Visors

Face shields protect the whole face, not just the eyes, and are used for grinding, heavy cutting and significant splash risks. They are typically worn over safety spectacles or goggles, because a visor on its own does not seal against fine particles that can travel up and behind it. The combination — primary eye protection plus an over-visor — is standard for angle grinding and similar high-energy work.

Welding Filters

Welding requires a filter with the correct shade number to block the intense UV and infrared radiation from the arc, as well as protection from spatter and molten metal. The shade must match the welding process and amperage — too light a shade leaves the welder exposed to arc eye, while too dark a shade reduces visibility and tempts the welder to lift the shield. Auto-darkening filters that react to the arc are now the norm and make selecting and maintaining the correct shade far easier.

Selecting the Right Protection for the Task

The single most important decision is matching the protector to the hazard. The table later in this article gives a quick reference, but the principle is straightforward: identify the dominant hazard for each task, then choose a protector rated for it. A few rules that trip up trade teams:

• Spectacles are fine for general impact but never adequate for chemical splash — use sealed goggles.
• For angle grinding and high-velocity cutting, choose a B-rated (or A-rated) protector, and add a face shield over it.
• For wet cement, mortar and concrete, use splash goggles marked 3 — the alkaline burn risk is serious.
• For welding, use a filter of the correct shade; ordinary tinted safety glasses do not protect against arc radiation.
• Never rely on prescription glasses as eye protection unless they are themselves certified safety eyewear.

Comfort, Fit and Compatibility

The best protector is the one your workers will actually wear. Eye protection that fogs, slips, pinches or doesn't fit over prescription glasses gets pushed up onto the forehead — and an eye injury at that moment is no different from wearing nothing. Comfort and fit are safety features, not luxuries.

• Anti-fog: Fogging is the number one reason workers remove eye protection. Specify anti-fog coated (N-marked) lenses, particularly for goggles and for work in cold or humid conditions.
• Prescription wearers: Provide prescription safety glasses certified to BS EN 166, or over-glasses (OTG) designed to fit comfortably over normal spectacles. Asking a worker to choose between seeing and being protected guarantees one of them loses.
• Compatibility with other PPE: Eye protection must work alongside respiratory protective equipment (RPE), hard hats and ear defenders without breaking the seal of any of them. Goggles and tight-fitting masks can interfere; test combinations before buying in bulk.
• Adjustability: Adjustable arms and straps mean one model fits a range of faces and reduces gaps where particles can enter.

Maintenance and Replacement

Eye protection is consumable. A scratched lens scatters light, reduces visibility and tempts the wearer to peer around it or take it off — and a deeply scratched lens has lost some of its impact integrity. Build replacement into your running costs rather than treating it as an unexpected expense.

• Inspect lenses before each use; replace any that are scratched, pitted, cracked or yellowed.
• Clean lenses with water and a lens cloth or wipe — never wipe a dry, dusty lens, which grinds grit into the coating.
• Store protectors in a case or pouch, not loose in a tool bag where they get scratched.
• Keep a stock of spares on the van so a damaged pair is replaced immediately rather than worked around.

Welding-Specific Protection and Arc Eye

Welding deserves special attention because the hazards are unusual and the injuries distinctive. Arc eye (also called flash burn or welder's flash) is photokeratitis caused by the intense ultraviolet radiation of the welding arc. The painful part is that symptoms — a gritty, burning sensation, watering, light sensitivity and blurred vision — typically appear several hours after exposure, often that evening, long after the work has finished. It is usually temporary but extremely painful, and repeated exposure raises the long-term risk of cataracts.

Crucially, arc eye does not only affect the welder. Anyone nearby who looks at the arc without protection can be affected — labourers, other trades, even people passing the work area. That's why welding screens and exclusion of bystanders matter alongside the welder's own filter. For the welder, use a correctly shaded welding filter (auto-darkening is strongly recommended), keep clear safety spectacles or goggles on underneath for grinding and chipping the slag, and never "tack and peek" without the shield down.

Quick Reference: Task vs Eye Protection

Quick Reference: BS EN 166 Impact Grades

Making Eye Protection Stick on Your Sites

Buying the right protectors is only half the job — the other half is making sure they're worn every time. Set the expectation that eye protection is mandatory for the relevant tasks, lead by example, and make compliance easy by keeping a good range and plenty of spares to hand. Record your risk assessments and the protection you've specified for each task, brief new workers on what to wear and why, and treat a fogging or scratched pair as a problem to solve rather than an excuse to go without. A few pounds of eye protection, worn consistently, prevents injuries that can end careers.