Allergies are frequently much more severe in the summer with conditions such as hayfever setting in, often for months at a time, due to the high levels of pollen in the air. For contact lens wearers, this time of year can be particularly lasik eye surgery minneapolis troublesome, with the majority of seasonal allergies having a considerable impact on the eyes, making them itchy and watery. Wearing contact lenses can increase this irritation, causing some people, reluctantly, to switch back to wearing glasses on the days when they are most severely affected. Allergies generally lead to excessive rubbing of the eyes, which can be troublesome if a contact lens is present.