If you frequently ride bicycles or motorcycles for long distances, it's also inadvisable to wear contact lenses. While riding, the speed of surrounding airflow significantly increases, causing the moisture in contact lenses to rapidly decrease. The lenses gradually dry out and harden. Over time, these hardened lenses can potentially damage the corneal epithelial tissue, leading to eye pain, itching, redness, swelling, or even inflammation.Additionally, dust and other foreign particles are more likely to enter the eyes while riding, causing discomfort or even infection. Women should also avoid wearing contact lenses during menstruation, as intraocular pressure tends to be higher during this period, and the area around the eyes is more prone to congestion—especially for those experiencing menstrual cramps. Wearing contact lenses at this time can adversely affect the eyes.