Visual Midline Shift Syndrome After a neurological impairment such as a stroke or TBI, disorders of vision can also occur which cause shifts in concept of a person's midline.
This syndrome is caused by a dysfunction of the ambient visual process and has the characteristics, as well as symptoms, presented in Table 1. However, the total impact of function and performance concerning balance, posture and movement may be interfered with further by shifts in concepts of the visual midline.

This can cause the person to shift their body laterally or in other ways which affect balance, posture and gait. Post Trauma Vision Syndrome (PTVS) and Visual Midline Shift Syndrome (VMSS) can be the cause of these difficulties.
A high correlation has been found with a shift in midline away from the neurologically affected side. This paper discusses the symptoms and characteristics of these syndromes as well as methods of treatment. The referral for psychological or psychiatric care is sometimes made based on a diagnosis of hysteria without recognizing that many of these individuals are suffering from syndromes affecting the visual process in the brain. In other words, the person would frequently report that the object appears to be directly in front of their nose when in fact it may be shifted to the right (see Fig. In turn, weight bearing will be shifted away from the side of the homonymous hemianopsia producing the effect of the VMSS. These syndromes have been called Post Trauma Vision Syndrome (PTVS) and Visual Midline Shift Syndrome (VMSS) [11].

However, after the physical rehabilitation therapy session is over, a shift away from the neurologically affected side continually occurs, frequently causing the person to experience a plateau and therapy to be discontinued.
This shift in concept of midline also can occur in an anterior posterior axis, causing the individual to experience a midline shift anteriorly or posteriorly (see Figs. This phenomena causes a shift in concept of midline that usually shifts away from the neurologically affected side. The resulting binocular problems are characteristic of what is known as Post Trauma Vision Syndrome.

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