There are two main types of bumps under the eyes. In the first case, the bumps are on the surface of the skin and resemble warts or skin growths, which can be removed by surgery. In the case of hard bumps on the eyelids, which are hard and sliding to the touch, it is most often considered to be a lid gland cyst, which is a cyst formed by the accumulation of lid secretions at the mouth of the lid gland due to obstruction of the opening of the lid gland. If the cyst is small, it can be improved by applying heat, but if the cyst is large, pus or pus spots form, it is difficult to absorb the cyst by applying heat and surgery is required.