It is most certainly not easy to revert. I was on it for 15 years and now have permanent, irreversible damage to my macular. I also can’t take hydroxychloroquine at all anymore because I will go blind.

But my doctors messed up and didn’t checked my eyes for over a decade. Once the usual optician spotted it, it was too late. If you see an ophthalmologist every year, they should spot any issue before it’s too late.