The Proportion of Ocular Involvement and Characteristics of Dry Eye Parameters in Primary Sjögren's Syndrome Referred from the Rheumatology Department

• Published in: Korean journal of ophthalmology 2024-10
• Main Authors: Jung, Hyun Ji, Jun, Roo Min, Han, Kyung Eun
• Format: Article
• Language: English
• ISSN: 2092-9382; 2092-9382
• DOI: 10.3341/kjo.2024.0108

To report the proportion of ocular involvement in primary Sjögren's syndrome (pSS) and to analyze various dry eye indexes and serum titers of markers depending on whether ocular involvement has occurred or not.PurposeTo report the proportion of ocular involvement in primary Sjögren's syndrome (pSS) and to analyze various dry eye indexes and serum titers of markers depending on whether ocular involvement has occurred or not.This retrospective study considered 214 patients referred from the rheumatology department for pSS workup. Symptom questionnaires, ocular surface stain score (OSS), Schirmer test, tear break-up time (TBUT), meibomian gland (MG) dropout, meibum quality, meibum expressibility, lid margin abnormalities, and lipid layer thickness were evaluated. Anti-Ro Ab, anti-La Ab, ANA, RF, ESR, and CRP were included as systemic serum titers of markers. Patients with (Group 1) and without (Group 2) ocular involvement were compared. We conducted a further subgroup analysis of group 1 by dividing it into two groups based on whether or not the cases met all the ocular criteria for pSS diagnosis.MethodsThis retrospective study considered 214 patients referred from the rheumatology department for pSS workup. Symptom questionnaires, ocular surface stain score (OSS), Schirmer test, tear break-up time (TBUT), meibomian gland (MG) dropout, meibum quality, meibum expressibility, lid margin abnormalities, and lipid layer thickness were evaluated. Anti-Ro Ab, anti-La Ab, ANA, RF, ESR, and CRP were included as systemic serum titers of markers. Patients with (Group 1) and without (Group 2) ocular involvement were compared. We conducted a further subgroup analysis of group 1 by dividing it into two groups based on whether or not the cases met all the ocular criteria for pSS diagnosis.Among the 214 referred patients, 118 were diagnosed as pSS: 87 out of 118 (74%) in group 1 and 31 (25%) in group 2. Group 1 showed higher meibum quality scores (p=0.016), meibum expressibility (p=0.01), and lid margin abnormalities on the lower lid (p=0.029) and lower TBUT (p=0.016) than group 2. Among the serum titers of markers, anti-Ro Ab negatively correlated with TBUT (r=-0.211, p=0.028). OSS, TBUT, and the schirmer test statistically differed between the patients who satisfied both ocular criteria (N=46) and those who satisfied only one criterion (N=41) (p=