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Radiologic Differentiation of Intraocular Glass

Evaluation of Imaging Techniques, Glass Types, Size, and Effect of Intraocular Hemorrhage

Devang M. Gor1, Claudia F. Kirsch1, Jeffrey Leen2, Roger Turbin2 and Stanley Von Hagen3

1 Department of Radiology, University Hospital, University of Medicine and Dentistry of New Jersey, Rm. C-320 150 Bergen St., Newark, NJ 07103.
2 Department of Ophthalmology, University Hospital, University of Medicine and Dentistry of New Jersey, Newark, NJ 07103.
3 Department of Preventive Medicine and Community Health, Biostatistics Division, University Hospital, University of Medicine and Dentistry of New Jersey, Newark, NJ 07103.



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  		Fig. 1. —Photograph of porcine eyes placed in skull with vegetable fat in orbits to simulate orbital fat.

 


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  		Fig. 2A. —Axial CT scans of intraocular foreign bodies in porcine eyes. 1.5-mm glass foreign bodies on corneal surface (open arrow) and in posterior chamber (straight solid arrow) in right eye. Also seen is 0.5-mm glass intraocular foreign body in posterior chamber (curved arrow) of left eye.

 


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  		Fig. 2B. —Axial CT scans of intraocular foreign bodies in porcine eyes. 0.5-mm glass foreign body in anterior chamber (arrow).

 


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  		Fig. 3A. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (A), sonogram (B), and T1-weighted MR image (C) show 1.5-mm glass fragment in anterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 3B. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (A), sonogram (B), and T1-weighted MR image (C) show 1.5-mm glass fragment in anterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 3C. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (A), sonogram (B), and T1-weighted MR image (C) show 1.5-mm glass fragment in anterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 3D. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (D), sonogram (E), and T1-weighted MR image (F) show 1.5-mm glass fragment in posterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 3E. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (D), sonogram (E), and T1-weighted MR image (F) show 1.5-mm glass fragment in posterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 3F. —Helical CT, sonography, and T1-weighted MR imaging of glass intraocular foreign bodies. Helical CT scan (D), sonogram (E), and T1-weighted MR image (F) show 1.5-mm glass fragment in posterior chamber of eye. Arrowheads indicate glass fragments.

 


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  		Fig. 4. —Bar graph shows contingency analysis of outcome by imaging modality mosaic plot. Data were compiled using logistic regression, one factor at a time. Fat. Sat. = fatsaturated.

 


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  		Fig. 5A. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 5B. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 5C. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 5D. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 5E. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 5F. —Helical CT of intraocular foreign bodies of various sizes and types of glass. CT scans show green beer bottle glass fragments of 1.5 (A), 1 (B), and 0.5 mm (C) in posterior chamber of the eye, compared with spectacle glass fragments of 1.5 (D), 1 (E), and 0.5 mm (F) in same chamber. Arrowheads indicate glass fragments.

 


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  		Fig. 6A. —Line graphs show contingency analysis of outcome based on size of glass fragment. Graphs indicate percentage of glass fragments detected using helical CT (A), MR imaging (B), and sonography (C).

 


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  		Fig. 6B. —Line graphs show contingency analysis of outcome based on size of glass fragment. Graphs indicate percentage of glass fragments detected using helical CT (A), MR imaging (B), and sonography (C).

 


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  		Fig. 6C. —Line graphs show contingency analysis of outcome based on size of glass fragment. Graphs indicate percentage of glass fragments detected using helical CT (A), MR imaging (B), and sonography (C).

 

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