Depending on its location and severity, a TBI can affect your vision by damaging parts of the brain involved in visual processing and/or perception (e.g., cranial nerves, optic nerve tract or other circuitry involved in vision, occipital lobe).
Imagination, also called the faculty of imagining, is the ability to form new images and sensations in the mind that are not perceived through senses such as sight, hearing, or other senses.
Creativity is the expression of the individual's characteristics of personality and imagination via art, writing, and other means. Creativity is the ability of a person to create, perform, or think of something in a way that has not been done before.