Background: Strain is a metric that analyses the extent to which the segment under study has been deformed in comparison with its original dimensions. A percentage represents this value here. Strain and strain-rate imaging is better to conventional echocardiography for evaluating Left atrial (LA) function because it can distinguish between active and passive cardiac tissue movement. Objective: Review of literature andassessment of left atrial strain as well as its imaging. Methods: Left atrial strain and imaging were searched for on Science Direct, Google Scholar, and PubMed. The authors also reviewed the relevant literature, nonetheless, only the most recent or exhaustive analysis was included, covering the time span from May 2002 to January 2023. There are no translation resources available, thus non-English documents are out. Unpublished articles, oral presentations, conference abstracts, and dissertations were not included because they were not considered to be part of major scientific projects. Conclusion: When compared to more conventional parameters of LA function, the strain parameter is less load dependent and more resistant to tethering effects. It is also possible to assess phasic atrial function throughout the cardiac cycle by measuring strain and strain rate.