### module | sense | vision:

Binocular vision
* affords a wide field of vision.
* allows for enhanced depth perception.
* depends on theoverlap of the two visual fields of both eyes.
* enhances our sensitivity to subtle differences in contrast, resolution, and color.
* is an advantage to harbor seals.
* is essential to accurately judge distance and depth
  - necessary for depth perception
  - often characteristic of predator species such as hawks, owls, cats, and snakes
  - the visual ability to determine three dimensions
  - three dimensional and contributes to depth perception
* occurs where the field of view of each eye overlaps
  - two monocular fields of view overlap
* offers predators precise visual information needed to spot and capture their prey.

Central vision
* becomes affected if the macula , the central part of the retina, becomes detached.
* can be significantly impaired.
* is impaired in juvenile and in age-related macular degeneration
  - important for reading, driving a car, and recognizing faces
  - lost in severe glaucoma
  - sight
* is the vision in the center, or straight ahead
  - used for reading, driving, and all tasks requiring acute vision

Clear vision
* act like magnets, pulling individuals and groups toward their realization.
* leads to clear thinking.

### module | sense | vision:

Color vision
* defects after central serous chorioretinopathy.
* depends on our having cones with different spectral sensitivities
  - the ability to discriminate between light of different wavelengths
* function of the cones.
* illustrates how genes give rise to mental properties.
* is altered during the suppression phase of binocular rivalry
  - best in the fovea, and worst at the periphery where rods predominate
  - due to a visual system that consists of three different classes of cones
  - frequently abnormal and correlates with the presence of macular edema
  - less well developed in mammals than in reptiles and birds
  - made possible by the cone receptors
  - possible only with light levels of sufficient magnitude to activate the cone system
  - simply a way of discriminating wavelengths
  - superb at detecting color variation in and around leaves
  - the ability to differentiate between colors
  - usually normal in an eye with optic nerve hypoplasia
  - very well understood, both from a physics and from a biological perspective

Colour vision
* Some colour vision helps primates.
* depends on the outputs of the different cones.
* disturbances in chronic smokers.
* is mediated by retinal cells known as cones
  - provided by cone cells in the retina
  - slow and brightness vision is fast

### module | sense | vision:

Computer vision
* cost effective way of polling that device without special hardware.
* is artificial intelligence.
* is the opposite of computer graphics
  - science and technology of machines that see
* learns how computers can find things in pictures
  * ' is the science of computers that can see. Computer vision learns how computers can find things in pictures. The pictures can come from many places, like movies, cameras, or medical machines. Computers are much worse at finding things in pictures than people are, so there are many scientists working on computer vision.
  * is the opposite of computer graphics. Computer graphics makes new pictures from an idea, but computer vision makes an idea from pictures

Double vision
* can also occur and is sometimes the only apparent sign of toxicity
  - develop in certain positions of gaze
* can occur as the cataract is forming
  - due to swelling and dysfunction of the eye muscles
* clear warning sign of impending blindness.
* is disability
* serious symptom and can be caused by several factors.

Foveal vision
* involves interhemispheric transfer of information.
* is vision