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Expired Artificial Tears

Hi, I have a box of Alcon artificial tears but it expired in Aug 2010. I would like to find out whether it can still be used? It contains no preservatives and contains the following ingredients: Dextran 70 0.1% and Hydroxypropyl Methylcellulose 2910 0.3%.
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233488 tn?1310693103
MEDICAL PROFESSIONAL
The expiration date is an inventory device not an indication when the drops lose their effectiveness so they should work just fine.
JCH MD
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I have 2 year old expired Refresh Tears. Sealed and have been in the refrigerator since purchased. Would it be safe to use it?
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Thanks Dr John!
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