The image quality of eye worn display devices is one of the important indicators to measure their performance, which directly affects the user's immersion and the accuracy of information acquisition. Therefore, accurate measurement of the image quality of eye worn display devices is crucial. The IEC 63145-20-20 standard specifies in detail how to measure image quality parameters of eye worn display devices, including but not limited to resolution, contrast, color accuracy, color saturation, dynamic range, image stability, and distortion correction.