to lose sight of somebody or something
01
to completely forget about or fail to consider something, particularly due to being really busy
![to [lose] sight of {sb/sth} definition and meaning](https://cdn.langeek.co/photo/44796/original/?type=jpeg "to [lose] sight of {sb/sth} definition and meaning")
idiom
informal
例
In the rush to finish the project, we lost sight of what the customer really needed.
02
be no longer able to see
