ALA	α-linolenic acid
CI	confidence interval
DED	dry eye disease
DHA	docosahexaenoic acid
EPA	eicosapentaenoic acid
GLA	gamma-Linolenic acid
LA	linoleic acid
MD	mean difference
OSDI	ocular surface disease index
PUFA	polyunsaturated fatty acid
RCT	randomized clinical trial
SD	standard deviation
SE	standard error
TBUT	tear breakup time