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| Progression symptoms (changes in the previous 1–3 months) | ||
|---|---|---|
| 0 | 1 | |
| Optic Neuropathy (0)-(1) |
Same or Better | Disc swelling or atrophy thought to be due to GO, or 2 of the following: (i) Decreased visual acuity equivalent to 1 Snellen line (ii) Afferent pupil defect (iii) Impaired colour perception |
|
| ||
| Extraocular muscle ductions (0)-(1) |
Same or Better | Decrease in uniocular ocular excursion in any one direction of ≥12° |
|
| ||
| Proptosis (0)-(1) |
Same or Better | Increase of ≥2 mm in proptosis |
