1. Differential Diagnosis of Red Eye

2. Differential Diagnosis of Red Eye Pain? Moderate to severe or deep pain Mild or pricking pain Itching or discomfort No pain or discomfort

3. Moderate to severe or deep pain

4. Moderate to severe or deep pain, reduced VA

5. Moderate to severe or deep pain, reduced VA, history of trauma

6. Moderate to severe or deep pain, reduced VA, history of blunt trauma

7. Moderate to severe or deep pain, reduced VA, history of sharp trauma

8. Moderate to severe or deep pain, reduced VA, history of chemical trauma

9. Moderate to severe or deep pain, reduced VA, no history of trauma

10. Moderate to severe or deep pain, reduced VA, no history of trauma, IOP > 40mmHg

11. Moderate to severe or deep pain, VA unaffected

12. Moderate to severe or deep pain, VA unaffected, history of UV exposure

13. Moderate to severe or deep pain, VA unaffected, no history of UV exposure

14. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, pain on eye movement

15. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, no pain on eye movement

16. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, no pain on eye movement, visible skin lesions on same side

17. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, no pain on eye movement, no visible skin lesions on same side

18. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, no pain on eye movement, no visible skin lesions on same side, deep bluish injection

19. Moderate to severe or deep pain, VA unaffected, no history of UV exposure, no pain on eye movement, no visible skin lesions on same side, no deep bluish injection

20. Mild or pricking pain

21. Mild or pricking pain, history of trauma

22. Mild or pricking pain, no history of trauma

23. Mild or pricking pain, no history of trauma, C/L wearer

24. Mild or pricking pain, no history of trauma, C/L wearer, mucopurulent discharge

25. Mild or pricking pain, no history of trauma, C/L wearer, no mucopurulent discharge

26. Mild or pricking pain, no history of trauma, C/L wearer, no mucopurulent discharge, severe conjunctival injection

27. Mild or pricking pain, no history of trauma, C/L wearer, no mucopurulent discharge, mild conjunctival injection

28. Mild or pricking pain, no history of trauma, not a C/L wearer

29. Mild or pricking pain, no history of trauma, not a C/L wearer, no mucopurulent discharge

30. Mild or pricking pain, no history of trauma, not a C/L wearer, no mucopurulent discharge, lid margin skin lesions

31. Mild or pricking pain, no history of trauma, not a C/L wearer, no mucopurulent discharge, no lid margin skin lesions

32. Mild or pricking pain, no history of trauma, not a C/L wearer, no m/p discharge, no lid margin skin lesions, localised sub-conjunctival redness

33. Itching or discomfort

34. Itching or discomfort, discharge present

35. Itching or discomfort, watery discharge present

36. Itching or discomfort, watery discharge present, follicles present

37. Itching or discomfort, watery discharge present, papillae present

38. Itching or discomfort, mucous discharge present

39. Itching or discomfort, mucous discharge present, conjunctival chemosis

40. Itching or discomfort, no discharge present

41. Itching or discomfort, no discharge present, lid margin swollen and red

42. Itching or discomfort, no discharge present, lid margin locally swollen and red

43. Itching or discomfort, no discharge present, lid margin generally swollen and red

44. Itching or discomfort, no discharge present, no lid swelling

45. Itching or discomfort, no discharge present, no lid swelling, no AC flare/cells

46. No pain or discomfort

47. No pain or discomfort, sectoral redness

48. No pain or discomfort, sectoral redness, solid red beneath conjunctiva

49. No pain or discomfort, sectoral redness, broken red

50. No pain or discomfort, sectoral redness, broken red, round or oval yellow/white lesion

51. No pain or discomfort, sectoral redness, broken red, triangular lesion with apex at cornea

52. No pain or discomfort, general redness