Table 1.

Adapted from the European Group on Graves’ Orbitopathy severity classification [18, 19]

Mild Graves’ ophthalmopathy	Lid retraction < 2 mm
	Mild soft tissue involvement
	Exophthalmos < 3 mm
	No diplopia or transient diplopia
	Exposure keratopathy responsive to lubrication
Moderate-to-severe Graves’ ophthalmopathy	Lid retraction > 2 mm
	Moderate to severe soft tissue involvement
	Constant or inconstant diplopia
	Exophthalmos > 3 mm
Sight-threatening Graves’ ophthalmopathy	Presence of optic neuropathy
	Presence of corneal decompensation