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PAIN
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Pain on eye movement in the last 4 weeks
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Pain or oppressive feeling on or behind globe in the last 4 weeks
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REDNESS
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Conjunctival redness
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Eyelid redness
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SWELLING
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Chemosis
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Swollen caruncle
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Eyelid oedema
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* Increasing proptosis of ≥ 2 mm during a period of 1–3 months
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IMPAIRED FUNCTION
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* Decrease in eye movement in any direction of ≥ 8° during a period of 1–3 months
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* Decrease in visual acuity of ≥ 1 line on the Snellen chart (using a pinhole) during a period of 1–3 months
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- 1 point for each feature present.
- *Criteria only counted at follow-up visits.
- Maximum Clinical Activity Score is 7 at enrolment visit and 10 at follow-up visits.
