First of all, I want to tell you estrogen can affect your eye sight. As to women, we all know that estrogen will affect the amount of hormone, namely, if the decrease will result in the hormone deficiency. As a matter of the fact, as the time going and they are becoming older and older, there are more possibilities that this kind of women will get sight loss. Apart from the sight loss, the clouding of the lenses of the eyes will occurs with the older women who are estrogen deficiency. Meantime, the estrogen will indirectly impact vision by alternation of the blood light,blood clotting or vessel walls. Here there is another problem you should keep in mind, if you are a contacts wearer, the problems mentioned above will be more likely happen to you. All in all, you should take eye exam in some certain time so that you can discover when your eyes have problems. Thanks.