Small bumps on the eyelid are normally styes. A stye is like a pimple that can appear red and swollen and it is basically an inflamed oil gland on the edge of your eyelid. It is caused by bacteria on the skin that get into the hair follicle of the eyelash.
To get rid of the stye (small eye bump), apply warm compresses for 10 mins, 4 times a day. The stye should disappear within 2 days.
To avoid styes always wash your hands thoroughly before touching the skin around your eye!