I justed used Eye Glo Plus Conforts Strained & Tired Eyes, Eye drops, then I notice it's been expired like 4 months ago at 08/2011... And someone wrote 24/2/09 maybe the date when it was bought... Opened...

Formula
Distilled Witch Hazel - 5%
Boric Acid - 1.3%
Borax - 0.3%
Preservative:
Benzanzalkonium Clororide - 0.01%

Warning:
Not suitable for contact lens.
Store in a dry place at 25'C
Doscard contents 4 weeks after opening.


I only have 1 sets of eyes... I just rinsed them under water... What will the worst thing could happen to my eyes if used.