To add to this subject...
On another forum, a couple of younger women in their 30's were just diagnosed with glaucoma. They had been on birth control pills for 10+ years. So there was some discussion about the potential of the lack of estrogen and glaucoma. Here is an interesting article regarding this issue...
https://www.aao.org/eyenet/article/glaucoma-in-women-estrogen-connection-2
When researchers at the Academy’s 2013 annual meeting reported an association between birth control pills and glaucoma, it created a stir in the news media and on the Internet. The study in question found that women who used oral contraceptives (OCs) for more than three years had a twofold risk of developing primary open-angle glaucoma (POAG) later in life.1
How Does Estrogen Protect?
Estrogen has known effects on nitric oxide production, which is important in IOP regulation and in vasodilation. Thus, a decline in estrogen could diminish blood flow to the optic nerve.