P298 Ocular manifestations in a giant cell arteritis cohort

Abstract Background/Aims The ophthalmic features of giant cell arteritis involve a spectrum of severity, from transient symptoms to bilateral visual loss due to anterior ischaemic optic neuropathy or, less commonly, central retinal or cilioretinal artery occlusion. Data of reported ocular involvement are varied, with a range of 10-70%. The variation may be related to the specialty of the unit reporting the data. We run an interdisciplinary service in a tertiary academic unit and report a complete picture of the frequency and nature of ocular involvement in GCA. Methods The records of 350 consecutive patients, diagnosed objectively on the basis of biopsy or imaging, were reviewed. In our centre, the hospital pathway mandates all individuals with suspected GCA to have a formal ophthalmology assessment including visual acuity, pupil exam and full dilated fundus assessment. We recorded the common signs and symptoms using a structured form which included ophthalmologic symptoms and examination findings, along with symptoms commonly associated with GCA: scalp tenderness, headache, jaw claudication, shoulder girdle stiffness, anorexia, night sweats, weight loss, and fever. Results From January 2012 to September 2021, 350 individuals were diagnosed with GCA by biopsy, ultrasonography or positron emission tomography. The mean age was 74 ± 7.7 years. 237 (68%) of patients were females. 99 (28%) presenting with GCA had visual symptoms and or signs. 34 had mono-ocular and two had binocular loss of vision. A summary of the key visual symptoms and signs are shown in Table 1. Only five patients with visual symptoms did not have any symptoms commonly associated with GCA. Conclusion We report the frequency of visual involvement in one of the largest cohorts of individuals with GCA. 28% have ocular symptoms. Partial or total monocular field loss occurred in 12% of cases. 1.4% of patients may be presenting with visual symptoms as the only sign of GCA. Rarely, permanent visual loss may occur without any other manifestation of GCA. Disclosure S. Mansfield Smith: None. M. Al-Hashimi: None. G. Ducker: None. C. Jones: None. C. Mukhtyar: None.