Ms. Li still likes to wear contact lenses after she became pregnant, but recently she found that her eyes were always dry and itchy, her vision was not as good as before, and it was easy to feel foggy when looking at nearby objects. Experts explain that after pregnancy, due to changes in hormones and circulating blood volume, the thickness of the cornea of the eye increases and the focal length of the eye\’s vision changes. At the same time, the curvature of the cornea will also undergo some changes, so the curvature of the cornea when wearing contact lenses before pregnancy does not match the current shape of the cornea, so wearing contact lenses will feel uncomfortable, and the effect of correcting myopia is not as good as before pregnancy. In addition, many women develop conjunctival tears during pregnancy