Participants filled in ocular surface disease index (OSDI) questionnaires.  The OSDI of asymptomatic MGD, symptomatic MGD and MGD coexisting with DED were 8.5 ± 2.9, 28.5 ± 12.8 and 27.9 ± 10.5, respectively. 
OSDI
Spearman's rank correlation analysis was used to evaluate the association between the significant factors and MG function.



Spearman's rank correlation analysis
Multivariate regression was used to analyze the significant factor of DED in MGD. 
Multivariate regression