Story 25 Trusopt [dorzolamide hydrochloride] for glaucoma

A Toronto reader reports:

I suffer from glaucoma and have tried a number of medications for it.
The only medication I have found which is effective is the Trusopt
Preservative Free eye drops [ dorzolamide hydrochloride]. A couple of days ago, I was informed that these drops are on back order and will only be available in July.

If left untreated my glaucoma will cause serious damage and potentially blindness by July. Is there any way I can receive the eye drops sooner?