If your work or recreational activities cause you to sweat, then the accumulation of this sweat may cause your glasses or goggles to fog up. This will seriously affect your ability to see what you are doing. It may also be that you work in a lab where the room can get stuffy and things are often on the boil. In this situation, anti-fog safety goggles are a must as they will give you unhindered vision and completely protect your eyes from steam or chemical splashes. If your work doesn’t involve splashes, then anti-fog glasses are perfectly fine, no matter how hot and stuffy your working environment may be.\r