Show or hide objects and layers

• To show or hide a layer or objects on a layer, click the square in the first left column against a layer or object name. The eye icon  indicates that a layer or object is visible.

• To show or hide multiple layers or objects, drag the pointer along the Eye column in the Layers panel.

• To show or hide all layers and objects, select Show All or Hide All from the Layers panel Options menu or pop-up menu.

 community help (adobe.com)