How we see light.

In this mini-documentary we meet Alex and his guide dog Leo. Alex is virtually blind. It is a congenital condition and means that any light that does enter his eyes is not processed correctly by his optic nerves. He has a minute amount of peripheral vision but only in bright light. In dark condition...

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Bibliographic Details
Corporate Author: Brook Lapping Productions (Producer)
Format: Video
Language:English
Language Notes:This edition in English.
Published: [England] : Teachers TV/UK Dept. of Education, 2009.
Series:Education in video
Lesson starters ; 5
Subjects:
Online Access:Connect to this streaming video (Alexander Street Press)

MARC

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520 |a In this mini-documentary we meet Alex and his guide dog Leo. Alex is virtually blind. It is a congenital condition and means that any light that does enter his eyes is not processed correctly by his optic nerves. He has a minute amount of peripheral vision but only in bright light. In dark conditions he can't see anything. When he watches the TV he has to look at it sideways and very close up. We ask Alex a series of questions about why he can't see and travel with him and Leo as they go to work. The Lesson Starter features shots from Alex's point of view simulating what his eyes are able to see. It is designed to address the learning objective that we see light sources because light enters our eyes. PROMPT QUESTION: Why can Leo see but Alex can t? 
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