In recent years, advances in dry eye imaging technology have not only been reflected in the ability to evaluate measurements based on clinical practice, but also to define new parameter data while ensuring the objectivity of measurement results. On this basis, it is beneficial to in-depth analysis of structural and functional parameters for diseases of dry eye. This article provides a brief overview of techniques such as tear film interferometry, optical coherence tomography, meibomian gland imaging, non-invasive rupture time, thermal imaging and optical quality assessment, and confocal microscopy used in dry eye diagnosis and treatment.