English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We aimed to examine the correlations between vitamin D deficiency, severity of dry eye symptoms and primary Sjögren's syndrome (pSS) by performing a systematic review and meta-analysis. Online databases (PubMed, Cochrane Library, and Embase) were searched to identify controlled studies comparing (1) severity of dry eye symptoms between participants with and without vitamin D deficiency; and (2) serum vitamin D levels between patients with and without pSS. Eighteen studies were included. Overall, individuals with vitamin D deficiency had shorter tear breakup time (TBUT), lower Schirmer's test scores and higher ocular surface disease index (OSDI) score than those without vitamin D deficiency. Additionally, serum vitamin D levels were found to be lower in pSS than controls. Our findings highlight the importance of vitamin D deficiency in the severity of dry eye symptoms and pSS.

Vitamin D Deficiency Is Associated with Severity of Dry Eye Symptoms and Primary Sjögren’s Syndrome: A Systematic Review and Meta-Analysis