A healthy, clear cornea is necessary for good vision. If your cornea is injured or affected by disease, it may become swollen or scarred, and its smoothness and clarity may be lost. Scars, swelling or an irregular shape can cause the cornea to scatter or distort light, resulting in glare or blurry vision.

If a cornea transplant is necessary, the damaged or unhealthy cornea tissue is removed and clear donor cornea tissue is put in its place.

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