| Sight-threatening GO: patients with dysthyroid optic neuropathy (DON) or corneal ulceration. This category requires immediate intervention |
| Severe GO: patients without risk for vision, but the eye involvement has such an impact on their quality of life that justifies the risk of immunosuppressive therapy (if active) or surgery (if inactive) |
| GO moderate to severe: patients have one or more of the following: palpebral > 2 mm retraction, moderate or severe soft tissue involvement, exophthalmos > 3 mm above normal for race and gender, inconstant, or constant diplopia |
| GO mild: patients whose features of GO have only a minor impact on daily life insufficient to justify immunosuppressive or surgical treatment. They usually have only one or more of the following: minor lid retraction (< 2 mm), mild soft tissue involvement, exophthalmos < 3 mm above normal for race and gender, transient or no diplopia, and corneal exposure responsive to lubricants |
