BACKGROUND: Improvement in vision with spinal manipulation was first observed in the early 1970s. Reports of the phenomenon appeared in the 1980s in the popular press and at scientific meetings, but it was not until the mid-1990s that general discussion of the potential value of this knowledge occurred. Considering the far-reaching implications of the possible ability to improve brain function by spinal manipulation, the delay in consideration and implementation of this concept is a paradox in general terms and a total mystery in the case of the chiropractic profession.
OBJECTIVE: To provide explanations for the delay in scientific assessment of the discovery that vision improves, in appropriate patients, when the spine is manipulated and to discuss the implications of this finding. This discovery is now called the "tunnel vision information."
DISCUSSION: A schema of pathological hierarchy is depicted in which the level of intervention of spinal manipulation outranks other forms of treatment. The significance of this precedence is portrayed. Possible reasons for the failure to address this hierarchy in light of the tunnel vision information are discussed with reference to established protocols, medical politics, the presentation of the data, the failure of scientific editorship and the illogical aspects of the illness itself.
CONCLUSION: In the future, the delay from the initial observation of the tunnel vision discovery to its free discussion in scientific literature may seem incongruous, particularly if the health benefits which it augurs are realized.
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