This document, from the International Society for Clinical Electrophysiology of Vision (ISCEV), presents an updated and revised standard for clinical electroretinography (ERG). The parameters for flash stimulation and background adaptation have been tightened, and responses are renamed to indicate the flash strength in cd·s·m⁻². The ISCEV Standard specifies five responses: Dark-adapted 0.01 ERG (rod response), Dark-adapted 3.0 ERG (combined rod–cone response), Dark-adapted 3.0 oscillatory potentials, Light-adapted 3.0 ERG (cone response), and Light-adapted 3.0 flicker (30 Hz flicker). An additional Dark-adapted 10.0 ERG or Dark-adapted 30.0 ERG response is recommended. The document also provides detailed guidelines for electrode selection, stimulation, electronic recording equipment, and clinical protocol, emphasizing the importance of standardization to ensure reproducible recordings. It recommends the use of contact lens electrodes for corneal recording and provides specific instructions for electrode preparation, stimulation, and data analysis. The document also addresses the calibration of equipment, patient preparation, and the importance of normal values and reporting standards. Special considerations for pediatric ERG recording are discussed, including the use of sedation or anesthesia and the need for age-specific norms.This document, from the International Society for Clinical Electrophysiology of Vision (ISCEV), presents an updated and revised standard for clinical electroretinography (ERG). The parameters for flash stimulation and background adaptation have been tightened, and responses are renamed to indicate the flash strength in cd·s·m⁻². The ISCEV Standard specifies five responses: Dark-adapted 0.01 ERG (rod response), Dark-adapted 3.0 ERG (combined rod–cone response), Dark-adapted 3.0 oscillatory potentials, Light-adapted 3.0 ERG (cone response), and Light-adapted 3.0 flicker (30 Hz flicker). An additional Dark-adapted 10.0 ERG or Dark-adapted 30.0 ERG response is recommended. The document also provides detailed guidelines for electrode selection, stimulation, electronic recording equipment, and clinical protocol, emphasizing the importance of standardization to ensure reproducible recordings. It recommends the use of contact lens electrodes for corneal recording and provides specific instructions for electrode preparation, stimulation, and data analysis. The document also addresses the calibration of equipment, patient preparation, and the importance of normal values and reporting standards. Special considerations for pediatric ERG recording are discussed, including the use of sedation or anesthesia and the need for age-specific norms.