Joint recommendation of the German Ophthalmological Society (DOG), German Retina Society (RG), Professional Association of Ophthalmologists in Germany (BVA), German Society of Pediatrics and Adolescent Medicine (DGKJ), Professional Association of Pediatricians (BVKJ), Federal Association “The Premature Infant”, Society for Neonatology and Pediatric Intensive Care Medicine (GNPI) (April 2022)