ABSTRACT
BACKGROUND: One of the most frequent ocular features of systemic sclerosis (SSc) is dry eye disease (DED), which has been identified to occur in 37-79% of patients. Although several studies have found weak or no correlations between symptoms and signs of dry eye, symptoms are often the motivation for seeking eye care, and are therefore a critical outcome measure when assessing treatment effect. The aim of this study is to evaluate the impact of symptoms of dry eye on vision-related quality of life in patients with systemic sclerosis, and to investigate the relation between clinical tests and symptoms of dry eye in these patients. METHODS: In this cross-sectional study, 45 consecutive patients with SSc were enrolled. For evaluation of the symptoms the "Ocular Surface Disease Index (OSDI)" questionnaire was applied to all patients. After that, all individuals were submitted to a full ophthalmic examination, including the following tests: tear break-up time, Schirmer I, rose bengal staining. Patients were then grouped into dry eye and non-dry eye groups with regard to the diagnosis of dry eye. Mann-Whitney test was used to compare continuous variables, whereas the Fisher exact test was used to compare categorical data between groups. Spearman's correlation test was used to analyze the correlations between clinical tests and OSDI scores. P values <0.05 were considered significant. RESULTS: Dry eye disease was diagnosed in 22 patients (48.9%). Other ocular surface abnormalities found were: blepharitis (40% of the patients), pterygium (15.6%), pinguecula (82.2%), and superficial punctate keratitis (26.7%). Among the 45 patients, 29 patients (64.4%) had symptoms of ocular surface disease. The mean OSDI score was 26.8 ± 25.8 (SD). There were no statistically significant differences in OSDI scores between DED and non-DED patients. No substantive correlations were found between OSDI scores and TBUT, Schirmer I, or rose bengal staining score, and none of the observed correlations reached statistical significance. CONCLUSION: Symptoms of dry eye have a moderate impact on vision-related quality of life in patients with systemic sclerosis and do not correlate well with clinical findings.
Subject(s)
Keratoconjunctivitis Sicca/physiopathology , Quality of Life , Scleroderma, Systemic/physiopathology , Vision Disorders/physiopathology , Adult , Aged , Cross-Sectional Studies , Female , Humans , Keratoconjunctivitis Sicca/diagnosis , Male , Middle Aged , Scleroderma, Systemic/diagnosis , Sickness Impact Profile , Surveys and Questionnaires , Tears/physiology , Young AdultABSTRACT
PURPOSE: To compare the central corneal thickness (CCT) of patients with systemic sclerosis (SSc) and control subjects. METHODS: The study group comprised 37 consecutive patients with SSc, and the control group comprised 23 healthy individuals similar in age and sex. CCT value was measured by ultrasound pachymetry. RESULTS: In the SSc group, the mean CCT in the right eye was 534.9 ± 33.5 µm and 536.9 ± 32.4 µm in the left eye. In the control group, the mean CCT was 533.0 ± 32.9 µm in the right eye and 533.1 ± 33.6 µm in the left eye. The mean CCT was not significantly different in the SSc group compared with the control group for both the right (P = 0.83) and left (P = 0.67) eyes. CONCLUSIONS: CCT measurements do not significantly differ in patients with SSc compared with healthy control subjects.
