Chemosis means swelling (edema) of the conjunctiva, the thin, clear tissue covering the white part of the eye and inside the eyelids. It often looks like the conjunctiva is puffy, jelly-like, or blistered, and it can even balloon out over the cornea in severe cases. Causes include: • Eye infections (bacterial, viral, allergic conjunctivitis) • Allergic reactions (seasonal allergies, eye drops allergy) • Trauma or surgery to the eye • Systemic conditions causing fluid retention (e.g., severe infl