Why is there a bubble on my eye?

Written by catherine fiorentino
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Why is there a bubble on my eye?
Eye cysts are typically harmless. (eye image by Pali A from Fotolia.com)

The appearance of a small clear or fluid-filled bubble on the eye surface is often indicative of a conjunctival cyst (also known as a retention cyst.) Conjunctival cysts are common and not life-threatening although they could indicate an underlying problem.

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Cysts on the eye typically appear clear, white or filled with fluid. They are usually small and difficult to see with the naked eye. A cyst that continues to grow or begins to cause discomfort might be indicative of a more serious issue and should be seen by an ophthalmologist right away.


Conjunctival cysts usually are caused by an accumulation of tear products from the eye that have become trapped in the conjunctiva. Other causes include, but are not limited to, eye trauma, infection or allergic reactions.


Treatment is not usually necessary for conjunctival cysts unless they don't go away on their own. If the cysts are being stubborn, an ophthalmologist will take a laser and prick the surface of the cyst to release the fluid. The doctor also will prescribe an anti-inflammatory medication if he or she feels it necessary.

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