The phrase "a visual expression of" is correct and usable in written English.
It can be used when describing something that conveys an idea, emotion, or concept through visual means, such as art, design, or imagery.
Example: "The painting serves as a visual expression of the artist's inner turmoil and struggles."
Alternatives: "a visual representation of" or "a visual depiction of".
The strip is a visual expression of bottom-line thinking.
Mr. Johnson said he tried to design a visual expression of the technology incorporated in the space.
We all stood together in silence, as proposed by Goldman, "to give a visual expression of our displeasure, not a verbal one".
The structure of the site is a visual expression of the brand's heritage — cutting-edge modern grafted onto a traditional, artisanal base.
The editors, in an introductory memo in the first issue, wrote: "A visual expression of contemporary thought -- mirroring the varied interests of the discerning cosmopolite, in society as well as in business or profession, in politics as well as in sport or the theatre -- in adventure as well as in the arts and sciences.
Slender, reductive devices are therefore a visual expression of the ecosystem lock in which give Apple's business its staying power.
Design: A poster is basically an visual expression of a scientific idea.
It is a perfect visual expression of the avant-garde dream of a society in a constant state of revolution.
It's a mixture of determination and desperation, a raw visual expression of how brazenly the former Disney Channel star has remade herself in a hip-hop image but also, it seems, of a creeping fear that her license to appropriate may be revoked at any moment.
The projection felt highly stylized but also scarily, disturbingly real -- really a perfect visual expression of the tone of that show.
In this method, a 3D visual expression of cylindrical surface spectrum of digital signal is introduced.
