PSYCO275 Lecture Notes - Lecture 15: Photopic Vision, Scotopic Vision, Color Vision
15 Oct 2016
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Document Summary
Light enters the eye and reaches the retina. Light is discrete particles of energy called photons. The human eye responds to the visible spectrum. Intensity is derived from the amplitude of the waveform. Transduction is to change something, such as transducing energy into signals. The cornea is where the light rst enters the eye. It is the transparent outer covering of the eye and it works with the lens to bend light onto the retina. It forms 15% of the outer eye, the sclera is opaque and makes up the rest of the outer eye. The pupil regulates the amount of light that passes through from the cornea to the rest of the eye. It is the hole in the middle of the iris (ring of muscles just behind the cornea). In bright light, it uses sphincter muscles, creates sharper image, has greater depth focus, higher acuity, and decreased sensitivity. Blue eyes are a recent adaptation for humans.
