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Coronal approach

Subperiosteal Exposure of the orbits and upper midface

The lateral subperiosteal dissection can be continued from the lateral orbital rim downward over the body to the inferior border of the zygoma.
Medial extension at this level provides exposure of the lateral half of the infraorbital rim to the infraorbital nerve and foramen.
This approach allows access to the lateral floor of the orbit. For full access to the orbital floor and the medial half of the infraorbital region it is advantageous to complement the coronal flap approach with transcutaneous or transconjunctival incisions in the lower eyelid.