# Orbital Bone Anatomy

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## Definition

The orbital bone (os orbitae) is the bony socket of the skull that houses and protects the eye, formed by seven cranial bones: the frontal, zygomatic, maxillary, lacrimal, ethmoid, sphenoid, and palatine. The periorbital region encompasses the infraorbital rim, lateral orbital rim, tear trough (nasojugal groove), and lateral canthus. The skin overlying these structures is the thinnest on the human body, measuring approximately 0.5mm at the tear trough compared to 2–3mm on the cheek and forehead. This thin tissue profile creates unique opportunities for phototherapy: photons encounter minimal attenuation before reaching dermal fibroblasts (200–500 microns) and capillary beds (300–800 microns). The six extraocular muscles controlling each eye perform approximately 100,000 movements daily.

## Related Topics

- periorbital-red-light-therapy
- dark-circle-treatment
- near-infrared-therapy

## See Also

- https://en.wikipedia.org/wiki/Orbit_(anatomy)
- https://www.wikidata.org/wiki/Q712581

## Target Keywords

- orbital bone anatomy
- periorbital skin thickness
- tear trough anatomy
- periorbital region
- orbital bone structure