Swollen eyes can be caused by colds. Swollen eyes may refer to bulbar conjunctival edema, which can be seen in severe colds or specific diseases. Bulbar conjunctival edema can occur when there is a high level of systemic inflammation caused by a cold. In the case of epidemic hemorrhagic fever, bulbar conjunctival edema can also occur, implying a heavy inflammatory response throughout the body. Swollen eyes from a cold may also refer to edema of the eyelids, which is mainly related to nephritis, which can also occur in acute nephritis caused by a cold. This kind of eye swelling is usually more obvious in the eyelids, and can also appear as bilateral lower limb edema, and eyelid swelling will be noticed more first. Therefore, the swollen eyes caused by the cold are mainly the above two.