A flower is the reproductive unit of an angiosperm plant. There is an enormous variety of flowers, but all have some characteristics in common. The definitive characteristic of the angiosperms is the enclosed ovary, which contains and protects the developing seeds.
A lesion to the optic tract on the right would cause this visual field defect. Left homonymous superior quadrantanopia (Pie in the SKY) A lesion to the right temporal lobe would cause this visual field defect. Left homonymous inferior quadrantanopia (Pie in the FLOOR) A lesion to the right parietal lobe would cause this visual field defect. Macula. A lesion in the visual cortex causes visual field defects similar to that of other lesion, with the exception of sparing of this portion.
(1)Department of Neurology, Marshfield Clinic, Wis., USA. jacobsod@mfldclin.edu. BACKGROUND: A lesion affecting the optic radiations may produce a quadrantanopia based on the topographical arrangement of the geniculocalcarine tract. OBJECTIVE: To determine the localizing associations of a quadrantic visual field defect. DESIGN: Retrospective study of case records of 41 patients with inferior quadrantanopia and 30 patients with superior quadrantanopia caused by disorders affecting the posterior visual pathway.