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Published on: June 7, 2017
Dry eye disease in systemic lupus erythematosus: a cross sectional study
Sui-Fang Kang1, Ying-Xue Wang2, Qi-Chen Zhang1
1Department of Ophthalmology, the Second Hospital of Shandong University, Jinan 250033, Shandong Province, China.
Aim:
To explore ocular surface manifestations of dry eye disease (DED) and its influencing factors in systemic lupus erythematosus (SLE) patients.
Methods:
Ophthalmological examinations were conducted in SLE patients (n=43) and controls (n=41), including Ocular Surface Disease Index (OSDI), objective scatter index (OSI), tear meniscus height (TMH), lipid layer thickness (LLT), non-invasive Keratograph tear breakup time (NIKBUT), corneal fluorescein score (CFS), Schirmer I test. DED was diagnosed according to the Tear Film and Ocular Surface Society Dry Eye Workshop II Criteria. SLE patients were further divided into DED group and non-DED group, the disease activity, clinical manifestations and laboratory investigations were compared between the two groups. The disease activity was evaluated by Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K). Receiver operative characteristic (ROC) curve and multiple-factor binary logistic regression were performed.
Results:
SLE patients showed higher OSDI [9.1 (2.8-15.9) vs 6.3 (2.2-7.5), P=0.035], higher OSI [1.67 (1.09-2.60) vs 0.96 (0.87-1.60), P=0.001], higher CFS [1 (0-2) vs 0 (0-1), P=0.001], lower LLT [65 (42-100) vs 100 (79.5-100), P=0.010], and lower NIKBUT [8.03 (4.02-9.73) vs 9.67 (5.26-12.71), P=0.030] than controls. The 32.6% of SLE patients had DED, which was higher than 12.2% of healthy controls. DED group showed higher SLEDAI-2K score [9.7±6.1 vs 5.4±3.4, P=0.025], higher anti-cardiolipin antibody (ACL) [8.7 (3.5-13.2) vs 3.6 (2.0-6.9), P=0.035], and higher proportion of patients with cutaneous eruption [42.9% vs 6.9%, P=0.015] than non-DED group. According to multiple-factor binary logistic regression analysis, the SLEDAI-2K score (OR=1.194, P=0.041) and cutaneous eruption (OR=7.094, P=0.045) could be consider as risk factors for DED in SLE patients. The ROC curve of the combined factors including age, disease duration, SLEDAI-2K score, ACL, and cutaneous eruption was analyzed, with a sensitivity of 0.786, a specificity of 0.793, and an area under curve of 0.820.
Conclusion:
Ocular surface affection is frequent in SLE patients, and patients with high disease activity and cutaneous eruption show increased risk of DED.
