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Chapter Outline
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Designing the Organ of Vision

  The Diversity of Eyes in Nature

  Why Have Eyes That Use Light?

  The Message and the Messenger: Inverse Optics

  Where Should the Eyes Be Placed?

  Why Should the Eyes Be Able to Move?

    How the Eyes Move

    How Should the Eyes Be Protected?

The Structure of the Human Eye

  The Outermost, Fibrous Tunic

  The Middle, Vascular Tunic

  The Anterior Chamber

  The Iris, Pupil and Lens

    The Iris

    The Pupil

    The Lens

  The Vitreous Chamber

  The Retina

Retinal Landmarks and Blood Supply

The Eye as an Optical Instrument

  Image Formation in The Human Eye

    Hyperopia

    Myopia

    Presbyopia 

Astigmatism 

A Sideways Look at the Retina

The Photoreceptors

  The Distribution of Rods and Cones

The First Step Toward Seeing

Computing Visual Angle








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