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Safety Goggles: Types and Uses Direct vented goggles allow a direct flow of air from the work environment into the goggle. In cases where impact is the hazard and a splash or vapor hazard does not exist then a direct vented goggle can be used as an appropriate level of protection. Indirect vented goggles provide protection from splash entry by a hooded or covered vent that allows the free movement of air but prevents the direct passage of liquid. The purpose of the indirect venting is to limit or prevent the passage of liquid splash into the goggle. In cases where chemical splash is a hazard, indirect vent goggles should be selected as appropriate protection. Non-vented goggles have no venting of any kind and offer protection against the passage of dust, mist, liquid and vapors. For applications where chemical vapor* is the hazard a non-vented goggle will be required protection. *Non-vented goggles are NOT gas-proof goggles in instances where gas-proof goggles are required to be worn, non-vented goggles will not provide adequate protection. When selecting the appropriate goggle for your workplace hazard you must first perform a workplace hazard assessment to determine if hazards are present. **Faceshields are considered secondary protection and require the use of primary protection such as protective safety eyewear to protect from hazards to the eyes and face. With proper training employers can protect their employees from eye injuries in the workplace by knowing how to identify workplace hazards. They can then determine when, where and what type of eye protection is required for a given workplace task.
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