The frontal eye fields (FEF) are a region located in the frontal cortex, more specifically in Brodmann area 8 or BA8, [1] of the primate brain. In humans, it can be more accurately said to lie in a region around the intersection of the middle frontal gyrus with the precentral gyrus , consisting of a frontal and parietal portion. [ 2 ]

Feb 15, 2025 · Visual field (VF) testing is essential in clinical practice for detecting, monitoring and determining treatment outcomes. 1-3 Standard automated perimetry (SAP) is the go-to clinical option, complemented by kinetic perimetry to fully characterize peripheral lesions. 4-6 In this article, we will review a range of VF defects that may be pathognomonic for certain conditions and will describe how ...

Nov 29, 2020 · The visual pathway comprises the retina, optic nerve, optic chiasm, optic radiations, and the visual centre in the occipital lobe. Optic nerve lesions tend to cause ipsilateral monocular blindness. At the optic chiasm , fibres from the nasal half of the retina, corresponding to the temporal visual field, decussate.

The visual field test is among the most important tests to learn to interpret as you begin your career in ophthalmology. Learn about the top 5 most common fields!

So, let’s start by taking a look at the optic pathway and understanding visual fields. You can think of a visual field as everything that can be seen with a single eye, so we have a left visual field for the left eye, and a right visual field for the right eye.

Sep 1, 2023 · Conceptualizing the visual pathway in three major sections—optic nerve, chiasm, and retrochiasm—can be help­ful in identifying patterns of disease and localization because pathology will vary based on which section of the visual pathway is affected. The finds are described assuming a left-sided lesion.

The optic pathway includes the retina, optic nerve, optic chiasm, optic radiations, and occipital cortex (see figure Higher Visual Pathways). Damage along the optic pathway causes a variety of visual field defects.

Visual information from each eye leaves the retina via the ganglion cell axons at the optic disc, creating the optic nerve. Prior to entering the brain, axons from the nasal portion of each retina cross the midline at the optic chiasm.

May 31, 2015 · There are relatively few causes for tunnel visual fields (or “gun barrel” visual fields), which is a relatively common finding in neuro-ophthalmology. There are 8 major categories of tunnel visual fields, which can be determined systematically through careful history and …

Visual fields are useful in monitoring progression or recurrence of disease and guide treatment for conditions such as idiopathic intracranial hypertension (IIH), optic neuropathy from multiple sclerosis, pituitary adenomas, and other sellar lesions.