Why do birth control pills affect wearing contact lenses?

The information that comes with the pills always say talk to your doctor if you experience difficulty wearing contact lenses. I stopped wearing them for a few years (went back to glasses) but I noticed some days when I would wear them they got dry and uncomfortable within a few minutes of putting them in.... show more The information that comes with the pills always say talk to your doctor if you experience difficulty wearing contact lenses. I stopped wearing them for a few years (went back to glasses) but I noticed some days when I would wear them they got dry and uncomfortable within a few minutes of putting them in. What's the connection, why would a hormone pill affect your eyes?
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