The purpose of this observational study is to prospectively collect data on ROP cases necessitating treatment at a national level. Each and every ROP screening unit in Greece (collaborating centers) report their new TR-ROP cases, their demographics and treatment characteristics, monthly, for a 12-month period. A reminder email is sent to avoid under-reporting due to neglect. Data are collected by the Responsible Party and will be analyzed together with national registry data on all preterm births in the same 12-month period.
A prospective observational study of the incidence of treatment-requiring ROP (TR-ROP), at a national level, in Greece.