Hormones are decreasing your tear production, which can lead to eye irritation. They can also increase fluid build up in the eye, which can temporarily affect your vision.
It's all completely normal, although that's not likely to make the symptoms any less annoying.
You may be tempted to fix the problem by getting new glasses, but you may want to hold off on that. Everything should go back to normal once the baby is born.
If, however, the changes to your vision are drastic and it's effecting your ability to drive or do daily activities, give us a call. Dr. Kar would be happy to see you to put your mind at ease.
Learn more about your vision during pregnancy: