The process of visual perception and production depends on the designer's innovative ability to fully plan a shape, and create it in a functionally satisfactory manner and this satisfies the recipient's need utilitarian, scientific and aesthetic simultaneously. 
The process of visual perception and the factors affecting it, as it provides an influence on the recipients of international exhibitions, with the aim of facilitating the recipient's understanding of the concepts and information presented within those exhibitions, ie the perception of objects and symbols quickly and accurately and the type of response depends on the factors of visual perception and the psychological and mental characteristics of the recipients of international exhibitions Therefore, two basic considerations interfere with this process: visual perception and the factors that govern the visual perception process. 
The cognitive style of the recipient clearly affects the ability to read optics.