Dr.Arushi Prakash, Dr.Niranjan Pehere
Difficulty in daily vision dependent activities due to problems with higher visual processing is called perceptual visual impairment.
A visualized image is processed in the occipital and temporal lobes. The processed information flows to posterior parietal lobes via dorsal stream pathway wherein a 3 dimensional map, of the visual world forms in our mind. Motor cortex uses this information to plan movements.
Simultaneously, information also flows to the temporal lobes via ventral stream where the acquired image is matched with storehouse of previously seen images. This leads to instant recognition.
Both dorsal and ventral streams function in unison & disturbance at any level in this process leads to unique symptoms.
Through this video we illustrate the symptoms and offer an explanation to why each of these happen which might help parent and caregivers of children with perceptual visual impairment to understand and adapt simple strategies to help child cope better with routine tasks
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