The purpose of this study is to test the safety of an investigational drug product, IBI-10090 (DEXYCU), in children to treat eye inflammation (redness) caused by cataract surgery. DEXYCU was approved by the FDA in February 2018 for use in adults, however; has not yet been approved for use in children. The active ingredient in DEXYCU is dexamethasone. Instead of being an eye drop containing dexamethasone, DEXYCU remains in the eye as a tiny droplet and slowly releases dexamethasone over a period of approximately two to three weeks. After that time the droplet is absorbed by the body. Subjects 0 to 3 years of age who are undergoing cataract surgery will be eligible for this study. The study starts at screening visit which is 3-29 days before surgery. Any study-related procedures will be performed only after obtaining informed consent. Child will be in the study for about 90 days after signing informed consent. Enrollment in this study requires a total of 8 visits. If child is eligible he/she will be randomly assigned (like the flip of a coin) to either study group DEXYCU or control group, prednisolone acetate. Child will have study visits 1 day following cataract surgery, and then at approximately 1 week, 2 weeks, 4 weeks, 6 weeks and 3 months after surgery. All visits are standard of care visits for all cataract surgery patients except 2 weeks and 6 weeks after surgery visits.