Optical bodies including rough strippable boundary layers and asymmetric surface structures

An optical body, comprising:

• a first optical film, a second optical film and at least one rough strippable boundary layer disposed between the first and second optical films adjacent to a surface of at least one of the first and second optical films, wherein at least one of the first and second optical films comprises a polymeric multilayer optical film;
• wherein a surface of the rough strippable boundary layer disposed adjacent to an optical film comprises a first plurality of surface structures with a first major dimension and a first minor dimension, and the adjacent surface of the optical film comprises a second plurality of asymmetric surface structures substantially corresponding to said first plurality of surface structures, wherein the asymmetric surface structures have a second major dimension and a second minor dimension, wherein at least one of the second major dimension and the second minor dimension are different from at least one of the first major dimension and the first minor dimension of the corresponding first surface structures, and wherein the second major dimension is substantially collinear with a first axis of the optical body and the second minor dimension is substantially collinear with a second axis of the optical body, and further wherein an average ratio of the second major dimension to the second minor dimension is at least about 1.5.