Canadian journal of ophthalmology. Journal canadien d'ophtalmologie · 2013
Investigation of tear osmolarity in early rheumatoid arthritis: relation to disease activity.
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Türkyilmaz Kemal, Küçükali Türkyilmaz Ayşegül, Kurt Ali, Kurt Emine Eda, Sevim Mehmet Şahin, Oner Veysi
Аннотация
OBJECTIVE: To investigate the frequency of dry eye (DE) by measuring tear osmolarity (TO) with the recently introduced TearLab system (TearLab Corp, San Diego, Calif.) in patients with early rheumatoid arthritis (ERA) and the relationship between the severity of DE and ERA disease activity.
DESIGN: Prospective study
PARTICIPANTS: Sixty-four eyes of 64 newly diagnosed and untreated patients with ERA were enrolled in this study.
METHODS: TO measurements, tear break-up time (TBUT), and Schirmer tests were performed. ERA disease activity was evaluated according to the disease activity score 28 (DAS28). The patients were divided into 3 groups according to DAS28 scores as follows: mild (DAS28 ≤ 3.2), moderate (3.2 < DAS28 ≤ 5.1), and severe (DAS28 > 5.1).
RESULTS: DE was identified in 46 (71.8%) patients with ERA according to the TO values. There were significant differences among these groups concerning TO (p = 0.001) and TBUT (p = 0.005) scores, whereas there was no significant difference between these groups regarding Schirmer scores (p = 0.200). In addition, DAS28 values were positively correlated with TO values (r = 0.710, p < 0.001), negatively correlated with Schirmer scores, (r = -0.251, p = 0.045), and negatively correlated with TBUT scores (r = -0.335, p = 0.007) among all patients.
CONCLUSIONS: Our study demonstrated a relationship between the ERA disease activity and severity of DE by using TO measurements with the TearLab system. Therefore, TO measurement could be added to other classical DE tests for diagnosing DE and for assessing the degree of disease activity of ERA.
DESIGN: Prospective study
PARTICIPANTS: Sixty-four eyes of 64 newly diagnosed and untreated patients with ERA were enrolled in this study.
METHODS: TO measurements, tear break-up time (TBUT), and Schirmer tests were performed. ERA disease activity was evaluated according to the disease activity score 28 (DAS28). The patients were divided into 3 groups according to DAS28 scores as follows: mild (DAS28 ≤ 3.2), moderate (3.2 < DAS28 ≤ 5.1), and severe (DAS28 > 5.1).
RESULTS: DE was identified in 46 (71.8%) patients with ERA according to the TO values. There were significant differences among these groups concerning TO (p = 0.001) and TBUT (p = 0.005) scores, whereas there was no significant difference between these groups regarding Schirmer scores (p = 0.200). In addition, DAS28 values were positively correlated with TO values (r = 0.710, p < 0.001), negatively correlated with Schirmer scores, (r = -0.251, p = 0.045), and negatively correlated with TBUT scores (r = -0.335, p = 0.007) among all patients.
CONCLUSIONS: Our study demonstrated a relationship between the ERA disease activity and severity of DE by using TO measurements with the TearLab system. Therefore, TO measurement could be added to other classical DE tests for diagnosing DE and for assessing the degree of disease activity of ERA.