Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
There are various artificial tears on the market that have preservatives, are preservative free, lipid-based and more.
Source: https://www.cnet.com/health/personal-care/eye-products-worth-investing-in/