Personally I somehow doubt this (in this case).
The disease effects a small number of people (1 in 4000), and doesn’t cause complete blindness in all those effected.
It’s delivered in a viral vector, kind of not so easy to do yourselves I’d guess. Probably the easiest way would be to get hold of some and culture the virus yourself? Then just make as much as you want.
Still injecting something made without strict QC into your eye might not be so appealing.