That is called a conjunctival cyst. It is like a blister on your eye. Like a blister elsewhere it may "pop" on it's own or, if it doesn't go away it can be popped with a sterile needle (best done by your ophthalmologist
:). This usually takes care of them but, once in a while, it has to be removed with very minor surgery in the ophthalmologists office.
What causes? 99% of the time we never know. It could be from small scratch that you didn't even notice or a gland getting plugged. In any event it is nothing to worry about.
If your eye is watering more then normal you might try soothing your eye with artificial tears as needed.
I know this sounds crazy but when your eyes are irritated they make more tears....this is the "something is in my eye" mode of tear production, not the "my eye feels fine and I'm making tears to keep things moist" mode. The use of natural tears will help your eye turn off the flood of "something in my eye" tears that comes from your eyes being dry.
Does this make sense?
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