Table 2.

Adapted from the Clinical Activity Score (CAS). A score of 3 or greater is indicative of active disease that would be responsive to immunosuppressive therapy [23]

Spontaneous orbital pain	1
Pain on up or down gaze	1
Eyelid erythema	1
Conjunctival erythema	1
Eyelid edema	1
Chemosis	1
Caruncular inflammation	1
Increase in proptosis of 2 mm or more between 1 and 3 months	1
Decrease in visual acuity of 1 or more lines between 1 and 3 months	1
Decrease in motility of 5 or more degrees between 1 and 3 months	1