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Related Concept Videos

Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Muscles of the Eye01:20

Muscles of the Eye

The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The Arch of Aorta01:10

The Arch of Aorta

The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...

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Related Experiment Video

Updated: Jun 4, 2026

A Rabbit Model of Aqueous-Deficient Dry Eye Disease Induced by Concanavalin A Injection into the Lacrimal Glands: Application to Drug Efficacy Studies
08:04

A Rabbit Model of Aqueous-Deficient Dry Eye Disease Induced by Concanavalin A Injection into the Lacrimal Glands: Application to Drug Efficacy Studies

Published on: January 24, 2020

The Intraconal Orbit.

Michael T Starc1, Sassan Karimi1

  • 1Department of Radiology, Memorial Soan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA.

Radiologic Clinics of North America
|June 2, 2026
PubMed
Summary

This review covers diverse intraconal orbital pathologies, from infections to tumors. Understanding orbital anatomy is key for diagnosing these lesions using imaging patterns and clinical data.

Area of Science:

  • Ophthalmology
  • Radiology
  • Pathology

Background:

  • The intraconal orbital space contains critical structures, making pathologies here clinically significant.
  • A wide spectrum of diseases, including infectious, inflammatory, benign, and malignant conditions, can affect the intraconal space.

Purpose of the Study:

  • To provide a comprehensive overview of intraconal orbital pathologies.
  • To emphasize the importance of intraconal anatomy in lesion interpretation.
  • To guide radiologists in diagnosing intraconal lesions through key imaging patterns and clinical considerations.

Main Methods:

  • Review of relevant literature on intraconal orbital pathologies.
  • Correlation of anatomical knowledge with imaging findings.
  • Discussion of characteristic imaging patterns for various conditions.
Keywords:
AbscessGliomaIgG4IntraconalLymphomaOrbitThyroid

More Related Videos

Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

Related Experiment Videos

Last Updated: Jun 4, 2026

A Rabbit Model of Aqueous-Deficient Dry Eye Disease Induced by Concanavalin A Injection into the Lacrimal Glands: Application to Drug Efficacy Studies
08:04

A Rabbit Model of Aqueous-Deficient Dry Eye Disease Induced by Concanavalin A Injection into the Lacrimal Glands: Application to Drug Efficacy Studies

Published on: January 24, 2020

Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

Main Results:

  • Identification of common and rare pathologies within the intraconal space.
  • Description of distinct imaging features for infectious, inflammatory, benign, and malignant lesions.
  • Highlighting critical clinical information for differential diagnosis.

Conclusions:

  • Accurate diagnosis of intraconal orbital lesions relies on a thorough understanding of anatomy and characteristic imaging findings.
  • This knowledge aids in formulating an effective differential diagnosis for orbital pathologies.
  • Radiologists play a crucial role in the early and accurate detection of intraconal diseases.