Table 5 Intra-observer reliability (Cronbach’s alpha) of the Hertel exophthalmometer, computed tomography (CT), and 3D reconstruction software.

From: Measurement of proptosis using computed tomography based three-dimensional reconstruction software in patients with Graves’ orbitopathy

 

All patients

Non-strabismus group

Strabismus group

Hertel

0.953

0.933

0.920

CT

0.942

0.921

0.895

Software

0.997

0.997

0.996

  1. CT computed tomography.