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.
creative - having the ability or power to create; a creative imagination. originative. original - being or productive of something fresh and unusual; or being as first made or thought of; a truly original approach; with original music; an original mind.