I understand that 1 ml of water contains 20 drops, and that substances of higher viscosity than water have fewer drops per 1 ml. I suspect that 1 ml of Alphagan P 0.15% has less than 20 drops.
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I have been taking different eye drops for ocular hypertension and it is over 100degF lately. I am worried that the new ones in the mail might not be ...
... co pay was double
0.005% benzalkonium chloride is in the brimonidine and not in the alphagan?