How we see light

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Description

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?