Figure 3. Accuracy and Precision of Eyeball Protrusion Measurements With the Smartphone Compared With the Hertel Exophthalmometer and High-Resolution Scanner.

Bland-Altman plots for comparison of the difference in eyeball protrusion between the Hertel exophthalmometer and professional high-resolution scanner (A), between the Hertel exophthalmometer and smartphone (B), and between the scanner and smartphone (C). Solid lines represent the means, and dashed lines indicate 95% CIs. Data of patients and healthy participants are pooled together.