FOCUSSED

(followed by on or upon) to concentrate one's attention.

Example: "I have to focus on my work."

To cause (rays of light, etc) to converge at a single point.

To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.

Example: "You'll need to focus the microscope carefully in order to capture the full detail of this surface."

To concentrate one’s attention.

Example: "If you're going to beat your competitors, you need to focus."

To transfer the input focus to (a visual element), so that it receives subsequent input.

Example: "The text box won't receive the user's keystrokes unless you explicitly focus it."