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Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography
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Orbital Imaging in Strabismus.

Robert A Clark1

  • 1a Family Eye Medical Group , Long Beach , California.

Journal of Binocular Vision and Ocular Motility
|September 11, 2018
PubMed
Summary
This summary is machine-generated.

Abnormal orbital anatomy destabilizes eye alignment. Proper orbital imaging, focusing on specific views and systematic analysis, is crucial for diagnosing these conditions and understanding extraocular muscle (EOM) abnormalities.

Keywords:
EOMMRIorbitpulleystrabismus

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Area of Science:

  • Ophthalmology
  • Radiology
  • Neuroscience

Background:

  • Normal orbital anatomy is essential for stable binocular eye movements.
  • Abnormalities in orbital anatomy can lead to destabilized binocular alignment due to unbalanced extraocular muscle (EOM) forces.
  • These abnormalities stem from various etiologies including structural, globe size, degenerative, innervational, and trauma-related disorders.

Purpose of the Study:

  • To outline the critical elements of proper orbital imaging for diagnosing EOM abnormalities.
  • To describe the systematic analysis of orbital images for identifying EOM positional and innervational disorders.

Main Methods:

  • Maximize field of view, control gaze (primary position), and image perpendicular/parallel to EOMs.
  • Systematic image analysis comparing EOM size and location between orbits and normative values.
  • Focus on anterior direct coronal plane for positional abnormalities and mid-orbit views for innervational disorders.

Main Results:

  • The anterior direct coronal plane is critical for diagnosing structural, globe size, and degenerative orbital abnormalities based on EOM position.
  • Mid-orbit imaging is essential for evaluating innervational disorders, with asymmetry in EOM size/shape indicating cranial nerve palsies.

Conclusions:

  • Properly performed orbital imaging is vital for diagnosing EOM abnormalities.
  • Systematic analysis of orbital images, particularly specific views, aids in identifying the etiology of binocular alignment disorders.