Pie In The Sky Visual Field

Ischemia of this portion of the optic radiations may result in a homonymous wedge shaped superior quadrant visual field defect commonly known as pie in the sky. Also remember a lesion to the left side of the head is likely to give a right visual field defect and vice versa. Remember also that visual input is processed in the contralateral hemisphere so a right sided visual defect localizes to the left hemisphere.

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A lesion affecting one side of the temporal lobe may cause damage to the inferior optic radiations known as the temporal pathway or meyer s loop which can lead to superior quadrantanopia on the contralateral side of both eyes colloquially referred to as pie in the sky.

Pie in the sky visual field. If your patient comes in with head trauma and you preform a visual field. This video concisely describes the path that visual information takes to reach the visual cortex of the occipital lobe. A superior quadrantanopia results from an insult to the optic radiation inferiorly in the temporal lobe resulting in a pie in the sky type of visual field defect figure 1d while an inferior quadrantanopia is caused by damage. Visual field of the patient may not be affected resulting in an hh with macular sparing figure 1c figure 2.

This superior wedge shaped area of vision loss is called a pie in the sky how do you localize a pie in the sky visual field defect. Visual field defects generalized depression both central and peripheral fields are depressed as in cataract peripheral depression only peripheral field is depressed as in rp temporal contraction only temporal field is depressed as in aging people depression means reduced sensitivity of the retina scotomas non seeing area of the visual field types. Mr verheugen in my view it is pie in the sky to believe that the liberalisation of trade alone can modernise agricultural production and strengthen rural development. Europarl europa eu herr verheugen meiner ansicht nach is t es e ine illusion dass allein durch die liberalisierung des handels die agrarproduktion modernisiert und die ländliche entwicklung gestärkt werden kann.

Lesion of this part of the radiation will cause a superior or pie in the sky quadrantanopia because it is a defect in the upper part of the visual field. Lastly visual processing is inverted on the vertical superior inferior axis. Keep in mind the following. Well the visual field defect affects both eyes which tells you that it is behind the optic chiasm.

Baum s loop or parietal optic radiation carries information from the inferior part of the visual field and runs more superiorly through the parietal lobe and terminates in the upper bank of the calcarine sulcus at the cuneus in the occipital lobe. If the superior optic radiations parietal pathway are lesioned the visual loss occurs on the inferior contralateral side of both eyes and is referred to as an inferior quadrantanopia. 206 207 view chapter purchase book. Pie in the sky visual field temporal lobe lesion pie on the floor visual field parietal lobe lesion anytime the lesion is in both eyes think post chiasmal.