Conjunctivitis is inflammation of the thin membrane covering the white of the eye and the inside of the eyelids. It has several causes — infectious, allergic and irritant — and on an industrial site all three are plausible, which is the first reason it is worth thinking about properly.
Why it spreads at work
Infectious conjunctivitis spreads by contact rather than through the air in most cases. The usual route is hands to eyes, or hands to a surface and then somebody else's hands to their eyes.
On a site, the contact points that matter are the obvious ones plus a few that get forgotten:
- Hands, door handles, handrails, control panels and tools.
- Towels, cloths and washroom facilities.
- Shared eye protection. Safety glasses, goggles and face shields passed between shifts.
- Shared respirators and full-face masks, which sit directly against the face and around the eyes.
- Shared welding helmets and visors.
The last three are specific to industrial workplaces and are frequently the weak point. PPE stores often have a cleaning routine on paper and a quick wipe in practice.
Practical controls
None of this requires anything unusual:
- Hand hygiene that is actually achievable — washing facilities near the work, soap that is stocked, and hand sanitiser where washing is impractical.
- Personal issue of eye protection wherever possible. Individually issued, individually stored, name-marked.
- A real cleaning and disinfection regime for shared PPE, with a named owner, a defined method following the manufacturer's instructions, and a record.
- Face-fitting equipment treated as personal where the work allows it.
- Don't-share rules for towels and cloths, and paper alternatives in washrooms.
- A reasonable position on attendance — somebody with an actively infectious eye who works in a shared-PPE or food-handling environment should not feel pressure to attend.
Distinguish infection from injury
On site, red and painful eyes are not always infection, and the difference determines the response:
- Chemical splash — irrigate immediately with clean water or eyewash for a prolonged period, continue while help is arranged, and take the substance details to the medical facility. This is an emergency, not a wait-and-see.
- Foreign body, grinding or welding particles — do not rub, do not attempt to remove anything embedded, and get it assessed.
- Arc eye from welding flash — typically appears hours after exposure; it needs medical assessment and a review of why the exposure happened.
- Dust and fume irritation — recurring irritation is a signal that the exposure control needs looking at, not just the eye.
When it needs urgent attention
Regardless of cause, treat these as reasons for prompt medical assessment: sudden change in vision, severe pain, marked light sensitivity, a visible injury to the eye itself, or symptoms in someone with an existing eye condition or a weakened immune system.
Where it fits
Eye health on a site is a combination of hygiene, exposure control and PPE management — the same three things that govern most occupational health exposures. Our industrial hygiene training covers recognising and controlling those exposures, and PPE selection and use covers the equipment side.
This article is general workplace guidance and is not medical advice. Anyone with eye symptoms should seek qualified medical assessment.
Content adapted from Eduforce's related safety and training publications.
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Rakesh Temkar
Author
Writes on first aid, health and workplace safety for Eduforce.
