How to prevent an eye stye ? Eye infection in change in season are seen more. Eye stye most commonly occur in summer season or when sudden changes in weather. It is very painful and irritating. Sometime blood comes from stye and cause a big problem. What is an eye stay ? Stye is a small pimple which dries up and puss fill into it. This type of pimple is often on the inner or outer surface of eyelid. This type of infection occurs from the bacteria called StaphyLococcus. In most cases the pimple is in the outer part of the eye, but sometimes it is also deep inside the eye. They are mostly of two types - 1. Inner stye - There does not white pimple in this because it is inside the eyelid. The painful red swelling in it comes to the inside surface of the eyes. Sometimes a small lumpy remains after the furuncle is healed. puss are pulled out by opening the lumpy of muscle. 2. Outer stye - In the beginning, there is a small pimple which then fills the water A