Table 3.

Summary of main cataract registries in the world, categorized by continents.

Countries	Cataract registries (and institutions)
Asia
China	Shanghai Cataract Operations Database
India	Aravind Eye Hospitals Registry
Israel	Israel Cataract Registry
Malaysia	Malaysia Cataract Surgery Registry
North and South America
US	Intelligent Research in Sight (IRIS) Registry (supported by the American Academy of Ophthalmology) Medicare Database Paediatric Eye Disease Investigator Group (PEDIG) database Toddler Aphakia and Pseudophakia Treatment Study Registry
UK and Europe
Denmark	Paediatric Cataract Register (PECARE)
Europe	EUREQUO (supported by the European Society of Cataract & Refractive Surgeons; ESCRS)
Germany	Germany Cataract Registry
Sweden	Swedish National Cataract Register
UK	National Ophthalmology Database (NOD) [supported by the Royal College of Ophthalmologists (RCOPhth)]