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By selectively replacing only part (lamellar) of the patient’s cornea, there is a significant reduction in the risk of rejection. The risk of relatively minor trauma damaging the eye is also lessened. For some types of lamellar transplantation there is also a significant reduction in likelihood of requiring a contact lens to achieve good vision.

For these reasons, where technically possible, is preferable to perform lamellar over penetrating corneal transplantation. There are some cases where this is not possible and a penetrating keratoplasty is performed.

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