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. 2019 Aug 2;13:1461–1467. doi: 10.2147/OPTH.S216838

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© 2019 Park et al.

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Three CT techniques for proptosis estimation. (A) Method 1: A line is drawn between the lateral orbital rims on the section that bisects the lens. B line is drawn between A line and the posterior surface of the cornea. (B) Method 2: A line is drawn between the lateral and medial orbital rims on the same axial plane. B line is drawn between A line and the posterior surface of the cornea. (C) Method 3: A line is drawn between the superior and inferior orbital rims on the sagittal plane. B line is drawn between A line and the posterior surface of the cornea.