LinKs to relevant WEB sites
|View from the Peripheral Retina||Actual view||View from the Fovea|
The smile on the face of the Mona Lisa is so enigmatic that it disappears when it is looked at directly, says Professor Margaret Livingstone of Harvard.
Anatomy of the Eye. Part 1. Part 2. Part 3
Common Eye Diseases and Disorders.
What is 20/20 Vision?
Animal studies show that if, at an early age, the image is not in focus, the eye ball changes its length. 50% of North Americans are near sighted. Perhaps this is caused by how we use our eyes. e.g. reading in poorly lit environments or watching fuzzy TVs or computer monitors.
See how David Williams uses adaptive optics to view cones in the human eye.
What an infant sees. From PBS. From the Smith-Kettlewell Eye Research Insitute.
Visit the Exploratorium Exhibits. Try the fading dot and the sliding grey step.
Colour vision emerged because it helped our ancestors to forage for food.
Jay and Maureen Neitz' Color Vision Web Page illustrates what it is like to be color blind.
Ishihara Test for Color Blindness.
Run your picture through Vischeck.
|Original image||Simulated image of vision in a person with deuteranopia (no green sensitive cone). This leads to an inability in distinguishing between red and green.|
|Simulated image of vision with tritanopia (no blue sensitive cone). This leads to an inability in distinguishing between blue and yellow.||Simulated image of vision in a person with protanopia (no red sensitive cone). This, just like deuteranopia, leads to an inability in distinguishing between red and green.|
April 2, 2013