Abstract:
PURPOSE:We performed nailfold capillary microscopy to explore microvasculature abnormalities in uveitis overall and uveitis stratified in various ways. METHODS:This was a cross-sectional, case-control, observational study. One hundred and seven uveitis patients and 130 control subjects were included. We used a JH-1004 capillaroscope to perform nailfold capillary video microscopy on the fourth and fifth digits of each subject's nondominant hand. Videos were evaluated for hemorrhages, dilated capillary loops > 25 µm, and avascular zones > 200 µm. Univariate analyses were used for the assessment of case-control morphological differences and multivariate analyses were performed to assess the relation between nailfold capillaroscopic findings and uveitis subgroups. RESULTS:In univariate analysis, uveitis patients were more likely to have higher tortuosity ratings and reduced capillary density compared to controls (p < 0.001 for both); furthermore, dilated capillary loops, avascular zone and hemorrhages were more frequent in uveitis versus control subjects (p < 0.001 for all). Among cases, every unit increase in capillary density (vessels/mm) was associated with active uveitis (n = 72 cases) versus inactive disease (n = 35 cases; odds ratio (OR) = 1.7; (95% confidence interval (CI), 1.2-2.5) in multivariate analysis. Furthermore, the presence of any nailfold hemorrhage versus the absence of hemorrhage was more likely to be associated with posterior and panuveitis (n = 41 cases combined) compared to anterior and intermediate uveitis (n = 66 cases combined; OR = 5.8; 95% CI, 2.3-14.2). Moreover, we found a positive correlation between peripheral retinal leakage and nailfold capillaries dilation (r = 0.33; p = 0.015) that was not strictly significant based on the number of comparisons made. CONCLUSIONS:Our study provides support for non-ocular capillary bed abnormalities in uveitis, with interesting correlations based on disease stage and anatomical classification.
journal_name
Curr Eye Resjournal_title
Current eye researchauthors
Chen X,Yao X,Chi Y,Guo C,Zhang J,Li J,Zhang S,Rong X,Pasquale LR,Yang Ldoi
10.1080/02713683.2018.1496265subject
Has Abstractpub_date
2018-11-01 00:00:00pages
1342-1350issue
11eissn
0271-3683issn
1460-2202journal_volume
43pub_type
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