Acuvail vs generic

My ophthalmologist prescribed Acuvail after my cataract surgery, but it's not covered by my insurance.  The doctor made a point of providing a decent supply of samples, leaving me with the impression that it's somehow preferable to the generic ketorolac.

I don't know yet whether I'll need to pay to get more, but I'm curious if there's a real difference.  The main differences that I can discern are the packaging (individual doses versus a 5ml bottle) and the preservative.  (I've never had a reaction to preservatives in eyedrops or contact lens solutions.)  Do these really matter?  Is there anything else that distinguishes Acuvail from similar generics?

[John C Hagan III, MD, FACS, FAAO]

For most people especially after surgery generic ketorlac is fine.

JCH MD