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A member asked:
Is there a difference between artificial tears in a bottle vs. single use vials?
A doctor has provided 1 answer
Preservative-free: Usually, eyedrops in a bottle are meant for multiple doses, and have a preservative to prevent germs from growing in the bottle after the bottle is opened. Single-use vials are meant for only one dose (one use), and do not need preservatives because they are expected to be thrown away after being opened.
Answered 4/21/2016
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