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An alternative to the separate reconstruction of each lamella of an eyelid is to use a flap which combines both lamellae. These flaps are taken only from the lower lid for reconstruction of the upper lid.
The two techniques described are used for defects of more than one-third length. The more commonly used is the Cutler-Beard bridge flap ( 17.1 ). The ‘switch flap’ ( 17.2 ), which is less commonly used, can provide an excellent reconstruction of large upper lid defects with the preservation of most of the lashes but a subsequent reconstruction of the lower lid, including the margin, is required. The disadvantage of both techniques, compared with techniques which do not require a bridge between the lids, is that the eye is closed for several weeks between the two stages.
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