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Corneal Edema Symptoms

The cornea is a protective domed layer of clear tissue covering the front of the eye. In corneal edema, the cornea becomes overly hydrated by accumulated fluid. Several symptoms point to corneal edema.

  1. Blurred Vision

    • A primary symptom of corneal edema is blurred vision. This symptom often is worse when the person first opens his eyes after sleeping and then improves throughout the day. If corneal edema is severe, vision can be significantly blurred.

    Visual Disturbances

    • The individual with corneal edema also may see halos or rainbows around streetlights, headlights and other bright lights at night. Again, this is most common when first awakening.

    Blisters

    • As corneal edema progresses, symptoms may include blisters that form on the surface of the eye. These can rupture and become painful, and also cause sensitivity to light.

    Nerve Ruptures

    • The disorder can eventually cause corneal nerves to rupture, resulting in severe pain.

    Causes

    • Causes of corneal edema include infection, glaucoma, post-operative eye changes, trauma, poorly-fitting contact lenses or overuse of contact lenses.

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