[Location] Localized in the sitting position or supine position, on the face, directly below the pupil of the eye, in the depression at the infraorbital foramen. ( Fig.41 )
 
[Regional Anatomy] Skin→subcutaneous tissue→orbicularis oculi, levator muscle of upper lip→infraorbital foramen or maxilla. Superficial layer, the branch of infraorbital nerves, the zygomatic branch of the facial nerve; deep layer, the infraorbital arteries, veins and nerves get out from the infraorbital foramen.