The clinical use of ultra – Wide field imaging and intravenous fluorescein angiography in infants with retinopathy of prematurity

•This study investigates the usefulness and practicality of ultra – wide field imaging and intravenous ultra – wide field fluorescein angiography in infants with severe retinopathy of prematurity (ROP).•Main outcomes included ROP status on ultra – wide field color imaging and intravenous ultra – wide field fluorescein angiography analysis, such as appearances of neovascularizations, plus disease, retinal vascular details and resolution after treatment.•The prominent advantage of ultra – wide field imaging in preterm infants was applicability with topical anaesthesia without need for general anesthesia.•Intravenous ultra – wide field fluorescein angiography helped to clearly demonstrate peripheral retinal avascularity, capillary development and dye leakage in a single image capture.