Im not under a specialist for it but might ask about going back to confirm FOXC1 through testing
Probably a good idea. I don't think anyone on this forum is going to know even a small fraction of what a specialist would. There should be ophthalmologists who are at least somewhat familiar with it, and have a great deal of related eye experience (glaucoma and ocular hypertension).
From what I can understand, the structural damage is done by the faulty gene during the embryonic stage. So it sounds like there are some treatments which can help cope with the effects of that, such as increased fluid pressure in the eye, and that is what can lead to glaucoma. Or something
So your opthalmologist should be able see if pressure is a problem for you (ocular hypertension), and prescribe appropriate medications if possible, just as they would with ocular hypertension caused by other factors. But basically it's a matter of dealing with the damage which the genetic mutation has done, rather than doing anything to alter the functioning of the gene.