Criteria used to score Round 2 indicators
| Criteria | Definition |
| Feasible | The indicator can be derived using either available data (eg, routine monitoring) or purposeful data collection (eg, population-based survey, clinic-based study) without substantial additional resources |
| Actionable | The indicator measures an aspect of eye health within health systems that may be used at a national level to create change through policymaking or strategy development |
| Reliable | The indicator returns similar results when measuring a stable phenomenon (eg, measurement has a sufficient degree of objectivity) |
| Internationally comparable | Reporting countries can comply with the relevant data definition; any differences in the indicator values between countries reflect issues in health systems rather than differences in data collection methodologies, coding or measurements |