visual field (VF)

Physiology: - that part of the environment seen with one or both eyes on forward gaze - representation of the visual field in the occipital lobe is upside-down & backwards - the left visual field in each eye falls on the right 1/2 if each retina; conversely, the right visual field of each eye falls on the left 1/2 of each retina - optic fibers temporal to the fovea connect with the lateral geniculate nucleus in the thalamus ipsilaterally - optoc fibers nasal to the fovea cross over to the contralateral side at the optic chiasm - the superior visual field falls on the inferior retina; conversely, the inferior visual field falls on the superior retina - thus the superior visual field projects to the occipital lobe below the calcarine fissure; the inferior visual field above the calcarine fissure Special laboratory: - see perimetry (visual field testing)

References

Clinical Anatomy Made Ridiculously Simple. Stephen Goldberg, MedMaster Inc, Miami, 1995