The feasibility analysis of calculating proptosis by simple Heron's formula.

ABSTRACT:

Purpose

We propose a new method to calculate proptosis by using the simple Heron's formula and analyze its feasibility.

Method

It was a none-inferiority trial. The registration number was ChiCTR1900026490. The absolute value of proptosis in 120 eyes, 60 patients without eye injury or diseases, was measured by computed tomography (CT) and simple Heron's formula. We did regression analysis and analyzed the differences between the two methods with Medcalc software version 19.0.4. The result was showed by Passing-Bablok regression analysis diagram and Bland and Altman plot.

Results

The Passing-Bablok showed that the result of proptosis measured by CT and simple Heron's formula showed good positive correlation. A 95% limit of agreement in proptosis between CT and Heron's f

SUBMITTER: Zhang W 

PROVIDER: S-EPMC7263846 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature