I have a clear sack or raised blister like area on my eyeball. It is causing discomfort, I have had no recent eye infection or injury. What is wrong and how do I treat this? Feverish ball sack came up in my search, what is this? I have no known health issues, am active, healthy weight, etc. The sack or growth on my eye is causing redness, and is raised off of eye--seemingly a part of or under the clear coating of the eye.