J Manipulative Physiol Ther. 1996 Jul-Aug; 19(6): 415-8.

Does 'normal' vision improve with spinal manipulation?

Stephens D, Gorman RF.

OBJECTIVE: To discuss a patient whose spinal abnormalities may have caused subliminal visual field loss. CLINICAL FEATURES: A 22-yr-old man suffered from a painful neck. His vision was in the normal range, as measured by computerized static perimetry. INTERVENTION AND OUTCOME: To define a guideline for a proposed investigation into visual field changes with spinal adjustment, his visual fields were tested before and after a normal office spinal manipulation. After this procedure, there was a measurable rise in the visual sensitivity of both eyes. CONCLUSION: The use of computerized static perimetry changes to measure the cerebral effects of spinal manipulation is recommended for future chiropractic research.