If the visual field loss is from the occipital lobes, the person will need to move or turn their head to see the image.
If the lack of vision is from the posterior parietal lobes, the person can see the image by either turning their body, of bending down (depending on the area).
If the person has visual field loss, combined with attention loss, due to both the occipital lobes and posterior parietal lobe injury they will need to turn both their head and their body to fully access information on the affected side.
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At CVI Scotland we are devoted to helping people understand cerebral visual impairments, and together working towards developing the understanding of this complex condition.