1. Classification and requirements for laser illuminated projectors (LIPs): (Laser Notice No. 57) : guidance for industry and Food and Drug Administration staff Publication: Silver Spring, MD : Center for Devices and Radiological Health, May 8, 2019 Subject(s): Equipment SafetyLasers -- classificationLasers -- standardsDevice ApprovalLasers -- adverse effectsHumansUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.