General information on eye protection

Information on protective goggles according to EN 166; Extract from the accident prevention regulations VBG § 4:

“The company has to provide suitable personal protective equipment and keep the latter in good working condition if operational measures do not exempt the insured parties from being exposed to dangers of accident and dangers to health. The company, in particular, must provide: eye or face protection if eye or facial injuries caused by flying parts, spray from liquids or dangerous radiation are to be expected.”

Easily injured – easy to protect

The human eye

The cornea: in direct contact with the environment and plays an important roll in the transmission of light rays. It is the most sensitive tissue in the human body.

The pupil: (Light controller) in the centre of the iris, it acts like the shutter of a camera. Its diameter changes according to brightness.

The lens: Thanks to a control muscle, it enables focussing (near sight and far sight). This muscles loses its strength with age and near vision deteriorates (presbyopia). The lens can lose its transparency due to the prolonged exposure to IR (infrared) and UV (ultraviolet) light which results in loss of sight. (cataract).

The retina: All light rays come together here. It transfers all of the information to the brain through the optical nerve, so that you can perceive what you see. Burnt retina cells are lost forever which results in irreversible loss of sight.
Danger to eyes in industry:
• mechanical dangers: dust, impact, solid particles
• thermal dangers: hot liquids, splashes from melted products, flames
• chemical or biological dangers: acid splashes, solutions, alkalis, infected blood
• dangers from radiation: ultraviolet, infrared, visible light, lasers 
• dangers from electricity: direct contact, arcs from short circuiting

Many work processes pose a number of dangers at the same time such that eye protection has to be constructed so as to be preventative in a number of ways. For example, welding goggles should protect against optical, mechanical and thermal effects due to their exposure.
European standardisation is based on the respective protective glasses or face shields. Face shields are respectively classified into safety face shield and face shield with filter effect. Protective goggles thus consist of the body of the goggles and the face shield according DIN EN 166.

Classification according to European standardisation:
DIN EN 166: complete personal general eye protection
DIN EN 169: Filter for welding work
DIN EN 170 + 1836: Ultraviolet filter
DIN EN 172: Cover protection for industrial use

clear face shield: protects against UV light, suitable e.g. for protection against abrasive particles, offers good transparency

yellow face shield: absorbs ultraviolet light where clear vision and contrast is required, filters out turbid light, well-suited for external work in twilight or semi-darkness or on foggy days (not to be used for driving)

grey face shield: reduces glare and dazzling light, offer good colour recognition (important for urban workers and linesmen)

Corrective protective goggles are available upon request. 

Personal advice

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Further information