Chalazion is basically a cyst in the eyelid. It is caused by inflammation of blocked meibomian gland. It normally goes away on its own after a few months. But in severe cases you would need treatment.
Here is a link from where you can get pictures of Chalazion:
images.google.com.pk
Here is a link from where you can get pictures of Chalazion:
images.google.com.pk