Search strategy MEDLINE (OvidSP)
| Category | # | Keyword |
| Children and young people | 1. | exp Child/ |
| 2. | exp Adolescent/ | |
| 3. | exp Pediatrics/ | |
| 4. | child*.mp. | |
| 5. | teen*.mp. | |
| 6. | school age.mp. | |
| 7. | 1/OR 6 | |
| Diabetes | 8. | exp Diabetes Mellitus, Type 1/ |
| 9. | exp Diabetes Mellitus, Type 2/ | |
| 10. | exp Diabetes Complications/ | |
| 11. | diabet*.mp. | |
| 12. | 8 OR/11 | |
| Retinopathy | 13. | exp Eye Diseases/ |
| 14. | exp Diabetic Retinopathy/ | |
| 15. | exp Retinal Neovascularization/ | |
| 16. | exp Macular Oedema/ | |
| 17. | retinopath*.mp. | |
| 18. | maculopath*.mp. | |
| 19. | background retinopathy.mp. | |
| 20. | microaneurysm*.mp. | |
| 21. | 13 OR/20 | |
| Prevalence | 22. | exp Epidemiology/ |
| 23. | exp Prevalence/ | |
| 24. | exp Incidence/ | |
| 25. | exp Natural History/ | |
| 26. | frequenc*.mp. | |
| 27. | epidemiolog*.mp. | |
| 28. | prevalen*.mp. | |
| 29. | inciden*.mp. | |
| 30. | severity.mp. | |
| 31. | 22 OR/30 | |
| Diagnostic tests | 32. | exp Photography/ |
| 33. | exp Ophthalmoscopes/ | |
| 34. | exp Fluorescein Angiography/ | |
| 35. | exp Fundus Oculi/ | |
| 36. | exp Slit Lamp/ | |
| 37. | exp ophthalmoscopy/ | |
| 38. | Tomography, Optical Coherence/ | |
| 39. | Ultrasonography/ | |
| 40. | photo*.mp. | |
| 41. | ophthalmoscop*. mp. | |
| 42. | angiogram*. mp. | |
| 43. | biomicroscopy.mp. | |
| 44. | Optical coherence tomography.mp. | |
| 45. | ultrasonograph*.mp. | |
| 46. | fundus.mp. | |
| 47. | Slim Lamp.mp. | |
| 48. | fundoscop*.mp. | |
| 49. | 32 OR/48 | |
| 50. | 7 AND 12 AND 21 AND 31 AND 49 | |
| 51. | limit 50 to yr=‘1995 -Current’ |