This blog is about how you have control over your own eyesight.
Your eyes can focus due to the combined function of your eye muscles.
Think of Vision Training as Physiotherapy for your eyes. The articles here are about how this is possible.
I speak from personal experience, since I wore glasses over 26 years (-5.50 diopters for near sight). More than 25 years ago (1991) I found a way to restore my natural eyesight.
Now you can as well ...
What You Need To Know About Color Perception
Colors make the world around us beautiful, but most importantly, colors are vital as they help us distinguish one thing from another. You can recognize a banana that’s gone bad by its color. It is speculated that we see more shades of green than any other color so that our ancient predecessors could spot a predator in the shrubs. We have a come a long way since then in terms of understanding how we see colors. There are two main coherent theories that explain our ability to see colors.
Trichromatic theory is also known as the Young and Helmoltz theory. These two scientists carried out an experiment where they used up to three different light sources of different wavelengths so that the resulting mixture of light is the same color as a test field that composed of a single wavelength light. This showed that different colored lights of their respective wavelengths can interact with each other to produce a resultant wavelength. For example, mixing red and blue would give us magenta. This experiment led to the hypothesis that was later validated which said that there are three kinds of receptors in our eyes that exist for three kinds of colors, each with a different peak wavelength sensitivity. Now we know that the S cone is for short wavelengths (blue), the M cone is for medium wavelengths (green), and the L cone is for long wavelength (red).
This theory was developed by Ewald Hering and suggests that our photoreceptive cone cells exist in pairs. Each of the cones in the pair is opposing in nature. The color pairs are blue/yellow, red/green and black/white. This theory states that activation of one cone in the pair inhibits the activity of the other. For example, seeing blue would inhibit the cone for yellow. The opponent-process theory is reinforced by the fact that we cannot see blue/red/back and yellow/green/white simultaneously. Our cone cells are programmed in such a manner that they function antagonistically.
We may see colors differently
Colors are mere manifestations of the photoreceptive nerves and their processing in our brain. Perception is what it’s all about when visualizing colors. In a recent experiment on squirrel monkeys, scientists were able to make them see red, a color they couldn’t see before. Squirrel monkeys only have two types of color sensitive cone cells, green cones and blue cones. Lacking red cones, they are unable to see red color. A virus was injected into the DNA of their green cones which converted it into a red cone. Now the monkeys had blue, green and red cones allowing them to find green and red dots in a gray image which they previously couldn’t spot. The neurons immediately adapted to the new red cone cells.
This finding sets a scientific base for how Margaret Corbet, a vision teacher in the 1940s, was able to help young men with color perception difficulties pass their color perception tests before they became pilots! Here are is a great exercise you can do to improve your color perception.
You can increase the number of colors you can distinguish by identifying colors to refine your ability to tell them apart. Count all the primary colors. The next day, count all the shades of green that you can find. The following days, count the shades of the remaining primary colors. Then, count all the secondary colors you can find. Then count and identify the different shades of grey. Then, work your way up to shades of brown. You should also observe how colors look in different lights including natural daylight, sunset, artificial light etc.
In my book "Improve Your Eyesight Naturally" there is a chapter about color perception and how you can improve it with exercises.
Peter Mansfield in his book “The Bates Method” (1998) introduced Dr Bates this way. The primary tool of Dr. Bates research was the retinoscope, an instrument of elegant simplicity, which allows direct assessment of refraction of the eye. The instrument was coming into regular clinical use while Bates was a student. He was intrigued by the possibilities of this new tool and made it his specialty. Bates was particularly interested in observing animals, children and adults, in normal activity in daylight, as opposed to the artifi- cial surroundings of the consulting room. As his observations continued he began to suspect, then became certain, that the eyes of people seeing normally behaved differently from those who saw abnormally. Further more, whether the vision was on the whole normal or not, the refraction of the eye was constantly changing. Bates then realised that the changes reflected, among other things, the state of mind of the subjects, so the vision would always be nearer to …
Fluorescent light tubes was introduced by General Electric at both the New York and San Francisco World Fairs in 1932. Compact Fluorescent Light CFL was also developed by General Electric in 1973, but the 25 million dollars needed the build a factory was considered too expensive at the time so it was not produced outside the laboratory. The design was eventually copied by others. In 1995, helical CFLs, were manufactured in China and became commercially available. Since that time, their sales have steadily increased. In 2005 the EU began phasing out incandescent light bulbs in favour of CFL’s the US followed in 2014. The rationale is energy sawing since the CFL are using less energy than the old-fashioned Edison incandescent lamp. However, the newer solid state Light Emitting Diodes L.E.D. technology is far more energy efficient. L.E.D lights use 80% less energy and has a lifespan approaching 40 years of continuous use and has no mercury. Naturalness of fluorescent light Incandescent light…
You may not realise it but your eye muscles are what make it possible for you to read this article. Most of the talk about vision evolves around the optical parts, especially the lens. However, the lens is only responsible for about 10% of your ability to focus, the cornea being responsible for the balance of 80%. Also, without the amazing interplay that takes place among the 12 muscles located around your eyes, you would not be able to experience the world as you do. Without the eye muscles you would only be able to see what’s directly in front of you. Eye movement problems are often the root cause of learning problems so let’s look at the work your eye muscles do.
Muscles inside your eye The most well-known eye-muscle is the cilliar muscle which is a ring muscle located around the lens. When the cilliary muscle contracts the stress across the lens is relaxed and the lens will expand, and your eyes will be able to accommodate or focus on the near. On the other hand, when the cilliar mu…