The document presents an updated ISCEV Standard for full-field clinical electroretinography (ffERG or simply ERG), revised to accommodate various light sources, including gas discharge lamps and light-emitting diodes (LEDs). The standard specifies six responses based on the adaptation state of the eye and flash strength: Dark-adapted 0.01 ERG, Dark-adapted 3 ERG, Dark-adapted 3 oscillatory potentials, Dark-adapted 10 ERG, Light-adapted 3 ERG, and Light-adapted 30 Hz flicker ERG. The standard emphasizes the importance of reproducible recordings and encourages the use of additional ERG protocols beyond the minimum standard. It details the technical requirements for electrodes, stimulation, and recording equipment, as well as the clinical protocol for patient preparation and testing. The document also provides guidelines for ERG analysis, reporting, and pediatric ERG recording, emphasizing the need for standardized procedures to ensure comparable data worldwide.The document presents an updated ISCEV Standard for full-field clinical electroretinography (ffERG or simply ERG), revised to accommodate various light sources, including gas discharge lamps and light-emitting diodes (LEDs). The standard specifies six responses based on the adaptation state of the eye and flash strength: Dark-adapted 0.01 ERG, Dark-adapted 3 ERG, Dark-adapted 3 oscillatory potentials, Dark-adapted 10 ERG, Light-adapted 3 ERG, and Light-adapted 30 Hz flicker ERG. The standard emphasizes the importance of reproducible recordings and encourages the use of additional ERG protocols beyond the minimum standard. It details the technical requirements for electrodes, stimulation, and recording equipment, as well as the clinical protocol for patient preparation and testing. The document also provides guidelines for ERG analysis, reporting, and pediatric ERG recording, emphasizing the need for standardized procedures to ensure comparable data worldwide.