title: The step phenomenon in the recovery of vision with spinal manipulation: a report on two 13-yr-olds treated together.
abstract: OBJECTIVE
  To discuss the immediate increment of improvement in vision that occurs when the spine is manipulated.
  
  
  METHODS
  Two juvenile patients (13-yr-old female cousins) were found to have constricted visual fields and diminished visual acuities.
  
  
  RESULTS
  Spinal manipulation was associated with recovery of normal vision over seven treatment sessions. It was noted that significant improvement in vision occurred immediately after the spinal manipulation treatments. Full recovery of vision was attained by series of these steps. In addition, both patients reported significant constitutional benefits after the treatment in addition to the improved vision.
  
  
  CONCLUSIONS
  The change in visual function immediately related to spinal manipulation has been described as the "step phenomenon." The step phenomenon raises questions about the nature of the condition that may be treated by spinal manipulation and the method of action of the treatment. A vascular hypothesis is mentioned that could explain these events. The consistent occurrence of the step phenomenon indicates that spinal manipulation may have an effect on brain function.
authors.forename: D
authors.initials: D
authors.lastname: Stephens
authors.forename: F
authors.initials: F
authors.lastname: Gorman
authors.forename: D
authors.initials: D
authors.lastname: Bilton
mesh_terms: D000293:Adolescent; D002684:Chiropractic / Q000379:methods*; D003118:Color Perception; D004244:Dizziness / Q000503:physiopathology / Q000628:therapy; D005260:Female; D006261:Headache / Q000503:physiopathology / Q000628:therapy; D006801:Humans; D009041:Motion Sickness / Q000503:physiopathology / Q000628:therapy; D013131:Spine / Q000503:physiopathology*; D014786:Vision Disorders / Q000628:therapy*; D014785:Vision, Ocular; D014792:Visual Acuity; D014794:Visual Fields