A quantitative method for assessing the degree of axial proptosis in relation to orbital tissue involvement in Graves' orbitopathy.

Purpose: To define a method of quantifying axial proptosis in patients with Graves' orbitopathy (GO) and to validate a score that correlates with the orbital involvement and helps determine the degree of proptosis correction for elective orbital decompression.

Design: Retrospective, case series.

Participants: The study included 50 patients (group A) and 29 control subjects who underwent orbital computed tomography (CT).