An assortment of different preservative formulations has been used in ophthalmic medicines and many of these preservatives have been linked to unwanted ocular surface side effects. Benzalkonium ...
We spoke with six experts to find the safest, best artificial tears, ointments or lubricating eye drops -- many preservative-free -- that you can buy without a prescription.
Ointments have the advantage of increased dwell time in the eye, but often patients and parents of children prefer drops, and no therapeutic advantage of one over the other has been demonstrated.
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