"visual access" is correct and usable in written English.
You can use it when you are referring to access to something through sight. For example, "The gallery provides visual access to a variety of artwork."
Undistorted visual access allows for detailed shadowgraph visualization of the motive jet in the mixing section at various degrees of condensation.
Providers in the CPP and CPDS groups were trained on accessing the provider Internet portal on office compatible computers (PCs), allowing visual access to patients' unanalyzed data.
"We much prefer the open visual access of the Coursen.
"She was in quarantine for thirty days, but he had visual access.
This increased visual access plays down their cuteness and brings out their reckless sculptural inventiveness.
This site will give the museum visual access to and from deepest SoHo, where the museum's cultural roots are planted.
Our visual access is limited and controlled by Mr. McCarthy so that we become like Peeping Toms.
As simple visual access to a rare symbol such as the Book of Kells has grown, the preciousness of the original object has also grown.
The cancers of the past were visible on the body's surface; now we have visual access to the enemy within at a micro level.
The modern display cases have fabulously sophisticated mitred glass by Hahn of Frankfurt allowing perfect visual access, works of art in their own right.
The sinister dimension thickens in the second of the ceremonial spaces, a tall box of an atrium that also reaches the full height of the building and gives visual access to the floors above.
