Goggles should be worn to provide protection against splashes of hazardous chemicals and to provide protection from flying particles. Goggles come in many different styles and with different ventilation features. You have 2 options with goggles worn to protect against chemical splashes. These goggles should feature indirect vents or they should not be vented at all.
Indirect vents allow for air circulation but keep hazardous liquids out.
Direct vent goggles potentially allow splashes to reach the eye and are suitable for protection against flying particles only. Check your goggles and those of your fellow workers to ensure that they provide the protection required by the work conducted in your facility. In most cases, the catalogues include pictures and descriptions of the goggles so that making the determination is straightforward. Remember, the PI is responsible for conducting hazard evaluations and ensuring that all personal protective equipment worn in the lab is suitable for the hazard.