AT

(2) 1.11 Vision

  • Wavelength

    • Distance from one wave peak to the next —> hue (color)

  • Cornea

    • Protects eye —> iris allows light to enter using the pupil

  • Lens

    • Changes shape to focus the light rays on the retina

  • Fovea

    • The central focal point

  • Retina

    • Contains the photoreceptors that process visual information

      • Transduction happens here

  • Photoreceptors

    • Rods: black, white, & gray

      • Peripheral & twilight vision

    • Cones: fine color & detail

      • function in daylight or in well-lit conditions

  • Ganglion Cells

    • Sends information to the optic nerve

  • Optic (visual) Nerve

    • Carries neural impulses from the eye to the brain