vapors are present or a chemical splash or chemical dust is possible because contact lenses can be damaged under these conditions. If, however, an individual chooses to wear contact lenses in the laboratory, chemical splash goggles must be worn. Note that there has been a change in recommended guidance regarding the wearing of contact lenses since the previous edition. Many organizations, including the National Institute for Occupational Safety and Health (HHS/CDC/NIOSH, 2005) and the American Chemical Society have removed most restrictions on wearing contact lenses in the laboratory. Chemical splash goggles or face shields should be worn when there is a risk of splashing hazardous materials or flying particles. Eye protection is required for all personnel and visitors in all locations where laboratory chemicals are stored or used, whether or not one is actually performing a chemical operation. Visitor eye protection should be made available at the entrances to all laboratories. Demonstrating prudent behavior within the laboratory is a critical part of a culture of safety. This includes following basic safety rules and policies (see Chapter 2, section 2.C.1), being cognizant
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