Anatomical structure of the orbit, the bone surrounding the eye, and the types of bones forming each wall, points (Whitnall’s tubercle, posterior lacrimal crest)

👁 Orbital Bone Anatomy: What Surrounds & Protects the Eye?

The orbit is a bony cavity that houses and protects the eye,
composed of several bones forming four walls.

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💡 Orbital Wall Composition

WallBones

Superior	Frontal, Sphenoid (lesser wing)
Medial	Maxilla, Lacrimal, Ethmoid, Sphenoid
Inferior	Maxilla, Zygoma, Palatine
Lateral	Zygoma, Sphenoid (greater wing)

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📌 Key Landmarks

LandmarkAttached Structures

Whitnall’s tubercle	LCT, orbital septum, levator lateral horn, etc.
Posterior lacrimal crest	MCT, orbital septum, levator medial horn, etc.

➡ These are essential attachment points for ocular and eyelid support structures

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✅ Summary

• The orbit is a pyramidal cavity made of multiple bones
• Different walls = different bone composition
• Whitnall’s tubercle and posterior lacrimal crest are key landmarks in eye surgeries