Intro arrow 1. Masking Alpha Channel arrow 1.2 Eye Movement
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0. Left & Right Brain
1. Masking Alpha Channel
2. Rods & Cones
3. LGN: Magno & Parvo
4. SC: Superior Colliculus
5. Primary Visual Cortex
6. Dorsal - Ventral Stream
7. Eye Movements
8. Oculomotor System
9. Balance System
10. Ectopia & Microgyrus
11. Genetic Etiology
12. Reading
13. Animals
14. Conclusion / Solution
15. Different Theories
16. Peace of Mind
1.2 Eye Movement & Facial Masking elements

We made a simulation in a 3D environment to test the influence of a masking-element on our sight.

step 1: Two cameras are focused on the center cube:

step 2: The cameras track the cube moving from left to right:

step 3: A separation element is placed between de camera's at different settings:

step 1

Step 2

step 4: Each camera captures the following images (no separation element):

Left camera
Right camera

step 5: With separation:

Left camera
Right camera

step 6: Both images are mixed over each other, and the view-blocking-element is 'masked' out:

1. No separation: A constant view of all the cubes.

2. With separation: The cube seen from the second camera fades-in when it is near the center, the cube of the first camera starts to fade out beyond the center.

Result: A more simplified view.

3. Longer separation: A combined vision of both moving cubes is reduced.

Result: An even more simplified and precise vision of the moving object.

step 7: More movement, the cube makes a big leap.

1. No separation: The moving cube stays visible in both camera views.

2. With separation: The yellow cube starts to fade in and out in both camera views.

3. Longer separation: The time when the cube is visible in both cameras is minimal, almost a smooth transition.

4. Much longer separation: There is a moment in time, where the cube is no longer visible by both camera's, there is a gap. A person would have to move his head to have a constant view of the cube.
step 8: The cubes are replaced by a text-line.

The text-line seen from the left eye.

 1. No separation.

 2. With view masking separation.

step 9: The separation element is 'masked' out and the right- and left view are mixed.

(Blue text is from the left eye, Gray from right):

1. No separation: The two text-lines overlap each other almost from the beginning to the end. (blurred)

2. Normal separation: There is less overlapping. 

3. Longer separation: Smooth transition between both views.

4. Much longer separation: A gap separates the two views, no fluent transition.

Result: "Facial Masking Area" between the eyes creates different inputs for the brain, ranging from smooth transition, to blurred overlaping areas and gaps. (See topic: 1.3 Different Intersections)
When a background is added:  1. No separation: Verry blurred vision of the background
 2. With separation: A clearer impression of the background

Conclusion: The level of intersection influences a fluent transition from one eye to the other; it helps to establish a 'sharp-focus' by reducing 'blur' or 'Gap', this masking element can also be a significant aid for visual alignment, and at sports where there is a need for precise tracking of objects at high speed.


In case of dyslexia; people with all levels of intersection usually don't have any problem with 'reading', so the idea that the intersection works as a switch to change from one view is to simplified. This test also doesn't include the knowledge from other topics such as Ocular Dominance and Left and Right Brain, that explain how our eyes look in a different way; Left-eye more 'Global', and Right-eye more 'Detailed'.


But in contrast for dyslexics who have a more sensitive peripheral view and a not so strong Visual Grid, the elements of 'Blur' or 'Gap' can be highly disturbing to read.

[Next: 1.3 Overview of Different Intersections]

The purpose of this site is to present questions and new ideas about the above subjects.

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