IIRC Neosporin Opthalmic Ointment is a sterile packaging of regular Neosporin. It is much more expensive than regular neosporin and (again iirc) it requires a prescription. Regular single use packets of neosporin may be more cost effective, and fit your space requirements just as well. OTOH, if you already have Neosporin opthalmic and are just wondering if it will work on regular wounds, since the formulations are the same, it should work as regular neosporin.

Edited to add: the opthalmic ointment is in a petrolatum base just like the regular ointment.

http://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?id=2262&type=display