Authors: Wang Wei, Li Guigang, Zhang Hong
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Tear osmolarity is an important factor in maintaining tear film stability. With the development of testing technology for tear osmolarity, more researches on tear osmolarity and related diseases were reported, and the advantages of tear osmolarity in diagnosing dry eye and related diseases appear to be obvious. The testing technology of tear osmolarity and the tear osmolarity critical value in dry eye diagnosis are concerned by many ophthalmologists. The effects of some factors on diagnosis of eye diseases including gender, age, eye side, diurnal variation, sampling position and collecting time of tear have been researched. The research progress in the relationship between tear osmolarity and dry eye diagnosis, diabetes, pterygium, coneal contact lens were summarized.