Lecture 03 - Visual Process

Lecture 03 - Visual Process - Visual System: The Eye...

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Visual System: The Eye Anatomy Optical Instrument: a camera p Accommodation: adjustment of the lens power by control of the ciliary muscle (control of focus) Aperture: adjustment of the pupil diameter by control of radial muscles and a sphincter muscle (control of incoming light).
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Visual System: The Eye (cont.) • Visual receptors ight is absorbed by photo pigments located inside 2 types of Light is absorbed by photo pigments located inside 2 types of receptors. Rods: High sensitivity to light , poor spatial resolution, no color discrimination, no rods in fovea, used for Night vision. Cones: 3 types red , green , blue pigments Color vision, low sensitivity to light, high spatial resolution ine detail) concentrated in fovea very few at periphery (fine detail), concentrated in fovea, very few at periphery, used for Daylight vision. ± Light adaptation (to darkness and light ) (mechanism???)
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Lecture 03 - Visual Process - Visual System: The Eye...

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