Table 4.

Rheumatoid arthritis classification criteria: American College of Rheumatology/European League Against Rheumatism[36]

Ocular Structure	Common Ocular Manifestations
Joint involvement
One large joint	0
2–10 large joints	1
One to three small joints, ±large joint	3
>10 joints (at least one small joint)	5
Serology (need at least one)
Negative RF, negative anti-CCP	0
Low positive RF or low positive anti-CCP	2
High positive RF or high positive anti-CCP	3
Acute phase reactants (need at least one)
Normal CRP, normal ESR	0
Abnormal CRP or abnormal ESR	1
Duration of symptoms
<6 weeks	0
>6 weeks	1

>6/10- definitive RA. CRP=C-reactive protein, ESR=erythrocyte sedimentation rate, RA=rheumatoid arthritis, RF=rheumatoid factor