This isn't necessarily surprising. We've known that hormones have a particularly strong effect on the eyes for a long time. https://www.aao.org/eye-health/tips

This isn't necessarily surprising. We've known that hormones have a particularly strong effect on the eyes for a long time. https://www.aao.org/eye-health/tips-prevention/how-hormones-can-affect-eyes-vision https://www.aao.org/eye-health/tips-prevention/how-hormones-... Thanks to hormones, women may experience vision changes throughout their adult lives. The hormones estrogen and progesterone have a lot to do with this. Their changing levels can affect the eye’s oil glands, which can lead to dryness. Estrogen can also make the cornea less stiff with more elasticity, which can affect how light travels into the eye. The dryness and the change in refraction can cause blurry vision and can also make wearing contact lenses difficult.