The cornea is largely responsible for the refraction. When the deformation of the eyeball, the curv

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The answers to both questions to determine whether you can influence without artificial aids or interventions. Whether or not your vision "Yes," say the answers Bates, "No," say the answers of the traditional ophthalmology.
With astigmatism, the shape of the eyeball irregularly deformed. This is the cornea is not perfectly round, but there is a dent or bulge in an oval. Now, the rays are differently ltc block year bent and is deformed on the retina the image. Or gives different foci which one will look twice.
The traditional ophthalmology is based on the (unproven) theory that the deformation is the result of a genetic predisposition ltc block year and / or the shape of the skull. The distortion is according ltc block year to them permanently. Learn more about whether poor vision is hereditary.
Bates was convinced that the outer eye muscles to bring the eyeball in a different form. The soft eyeball responds ltc block year to the movements of the outer eye muscles and changes ltc block year constantly. The refraction thereby also changes. This happens when people with good vision and people with blurred vision.
Also, cataracts and presbyopia (presbyopia) according to the regular ophthalmology for the most part genetically determined ltc block year and therefore can not be avoided and certainly not healed. Bates was of the opinion that these ailments are caused by stress and thus heal the same way as "normal" ltc block year refractive errors.
To see clearly at varying distances you have to adjust eye itself. The rays from a distant object to be deflected differently fact than an object close to both focus on your retina get them. This adjust is called accommodation.
The ophthalmologist Dr. Helmholz, who died in 1894, has shown that while accommodating the rear of the lens is convex when looking at something far away. This is done by the internal eye muscles to which the lens:
He was during his studies he could discover nothing that contributed to accommodate the process. His conclusion was that only accommodates the lens. This theory is to this day taught by ophthalmologists ltc block year and opticians.
My father has such a few years ago to undergo cataract surgery and received an artificial lens. He can not change shape. However, he can very often see both distant and close focus.
In addition, the lens with age becoming ltc block year less flexible. Hence, it allows everyone after his fortieth sooner or later will have to use reading ltc block year glasses. Yet there are plenty of people who in old age do not need glasses, not even to read. My mother is one of them!
If the eyeball changes its shape (by the outer eye muscles), also changes the distance between the lens and the retina. The eyeball is longer, then the focal point of the rays from a near object on the retina.
The cornea is largely responsible for the refraction. When the deformation of the eyeball, the curvature of the cornea changes with and in the absence of the lens, the eye is thus able to get anyway. The focal point of the rays at the right point
The ophthalmologist WB MacCracken comes in his book "Normal Sight without glasses' to the interesting conclusion that the theories of Helmholtz and Bates are not mutually exclude but can complement. Just fine
He supposes that also adapts to the changed situation in which the internal eye muscle plays a role. At longer or shorter are the eyeball using the external muscles of the lens The impulse from the central nervous system allows both muscles work together in harmony. In this way the lens serves as a tool to make the process. Accommodation that has been put in motion by the external eye muscles
If this is the case both Bates and Helmholtz quite right and just their conclusion that either the external or the internal eye muscles are solely responsible for accommodating incorrect.
The regular ophthalmology is still assumed that the shape of the eyeball is a fact that one can exercise. No influence Therefore it focuses exclusively on eliminating the haze. In most cases, therefore, a pair of glasses or contact lenses will be prescribed. ltc block year
Bates assumes that blurred vision is a signal of our body that we are doing something natural obstructing vision. In short, we should go to see the natural habits which those obstacles get back