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Eye stabilization reflexes in traumatic and non-traumatic chronic neck pain patients

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  • Ref Eye stabilization reflexes in traumatic and non-traumatic chronic neck pain patients

    http://www.mskscienceandpractice.com...lltext?rss=yes



    Highlights
    • Chronic, unsuccessfully treated neck patients have an elevated COR.
    • This elevation seems to be independent of the origin of complaints.
    • The group of neck patients with altered reflexes is bigger than assumed.
    • Thus, other presently unknown factors cause the reflex alterations.
    • Maybe persistent sensorimotor disorders are a perpetuating factor.

    Abstract

    Background


    Many chronic neck pain patients experience problems with vision. These problems are possibly induced by deviations of the eye stabilization reflexes. It is not known whether these eye reflex alterations occur both in traumatic and non-traumatic neck pain patients.

    Objective


    To investigate if the cervico-ocular reflex (COR) and the vestibulo-ocular reflex (VOR) are changed in tertiary care patients with prolonged, chronic neck pain with various origin of complaints.

    Design


    Cross sectional study.

    Methods


    Ninety-one chronic neck pain patients were subdivided into three groups by origin of complaints, and compared with healthy controls. COR and VOR gains were measured with an infrared eye tracking device with the subject sitting on a rotating chair in a darkened room and with the head fixed.Results


    Neck pain patients had a higher COR gain (median 0.41, IQR 0.289) compared with healthy controls (median 0.231, IQR 0.179). The mean COR gain did not differ between the three patient groups (Whiplash Associated Disorders 0.444 (SD 0.221); traumatic 0.397 (SD0.205); non-traumatic 0.468 (SD0.236)). There was no difference in VOR gain between the groups.

    Conclusion


    Chronic neck pain patients, who already received primary care, still have an elevated cervico-ocular reflex. The origin of complaints did not seem to be associated with this deviant oculomotor behavior.
    Last edited by Jo Bowyer; 12-08-2017, 09:19 AM.
    Jo Bowyer
    Chartered Physiotherapist Registered Osteopath.
    "Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
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