Retinopathy of prematurity screening takes about 1 hour from start to finish. 1. Before the screening, parents are advised to finish breastfeeding their babies in advance, and try not to breastfeed for one hour during the screening (from the start of the eye drops to the end of the examination), so as to minimize the possibility of babies choking on their milk during the examination. 2. To prepare for the screening, the child should be given 5 doses of eye-diluting eye drops (compound tropicamide), and after each dose, parents should gently press on the lacrimal sac area (inner corner of the eye) of the child to avoid systemic absorption of the drug. If the child must be breastfed, please breastfeed during the process of eye drops, but must always observe the child during the process of breastfeeding to see if there are any signs of choking on the milk such as bruising of the lips and face, etc. After the five eye drops are finished, the child can not be breastfed or fed again. Huang Jing, Department of Ophthalmology, Jinan Children’s Hospital 3, the baby needs to check the pupil dilatation after 30 minutes after 5 eye drops, if the pupil has been dilated can be Retcam fundus camera. 4, during the examination, we will ask the baby to check the pupil dilatation, and then we will ask the baby to check the pupil dilatation. 4, we will ask parents to assist the doctor in the examination process, if the child is older, the pain may be more serious, please assist the doctor to fix the baby’s head. 5, after the examination, the child’s eyelids may be red and swollen, some of the child’s bulbar conjunctiva (white eyeball) may appear punctate subconjunctival hemorrhage (red spots), parents should not be alarmed, can be given topical antibiotic eye drops (tobramycin eye drops) eye spotting for 2-3 days.