During vision testing for a client who suffered a head injury, what finding indicates a problem with pupil accommodation?

The indication of a problem with pupil accommodation is best represented by the lack of change in pupil size when the client shifts their focus from a distant object to a nearby one. Pupil accommodation is a reflex that involves the pupils constricting when viewing objects up close and dilating for distant vision. This coordination helps in focusing light on the retina appropriately. If there is no change in pupil size during this adjustment, it suggests that the neurological pathways influencing accommodation might be impaired, especially after a head injury.

Excessive tearing is not directly related to the mechanism of pupil accommodation. It might reflect other issues such as irritation or inflammation, which could coexist but don’t specifically indicate accommodation problems. The inability to see colors, known as color blindness, is unrelated to the accommodation reflex as it pertains more to retinal function. Blurred vision at all distances could indicate various visual impairments, such as refractive errors or other ocular issues, but it does not specifically signify a failure of the pupil's response to change focus, which is what pupil accommodation entails.