干眼

干眼的病因

泪腺病变(20%):A.原发性泪液不足(PrimaryLacrimalDeficiency,PLD),为先天性无泪症,无或有泪腺,但缺乏分泌;非SS性KCS,有时称作后天性PLD,或简称KCS;B.继发性泪液不足(SecondaryL...