Articles For Doctors
How Do Eyelights Work?

Eyelights target the weaker functioning side of the brain via the non-dominant eye.  Light stimulation directly to the non-dominant brain causes an excitatory barrage to travel to the mesencephalon, the most metabolic area of the brain, where an increase in cellular activity takes place.  The excitatory barrage travels also to the parietal, temporal, and occipital lobes of the brain, while collateral fibers lead to the pineal gland, pituitary gland, and hypothalamus.

Both sides of the brain are being affected, but emphasis is placed on the non-dominant system where dysfunction usually first occurs.  Stimulation of the non-dominant eye will affect the opposite hemisphere of the brain via the thalamus.  When stimulating the right eye, the left side or analytical portion of the brain will be affected greater.  When stimulating the left eye, the right side or creative portion of the brain will be affected greater. 

Eyelights offer a choice of settings for either the right or left eye, but the NON-DOMINANT EYE ALWAYS GETS THE THERAPY.  The lights flash in a monocular pattern with both the top and bottom rows flashing at the same time.  However, one row will always flash brighter than the other.  When the upper row of lights is flashing brighter, it will affect the temporal lobe (mentality/emotionality) of the brain and parvo cells of the thalamus greater.  When the bottom row of lights is flashing brighter, it will affect the parietal lobe (sensory/motor) and magno cells of the thalamus greater.

Non-Dominant Eye
Upon fatigue, the non-dominant eye will lateralize.  When you are looking straight ahead, the dominant eye looks right at you, while the weaker eye has broken its yoke and lateralizes to the side (looks at the doorknob).  The brain is not able to look in two different directions and maintain proper input or thought processes.  Since it is looking at two different objects, the brain will cortically suppress the input from the non-dominant eye, recognizing only the information from the dominant eye.  When this occurs, the rods and cones (photosensitive cells located in the retina that convert light energy into signals) of the eye are not being brought up to threshold, and the "use it or lose it" cycle begins. 

When suppression of the visual centers occurs there is also loss of motor output, resulting in muscle imbalance.  Medial rectus eye muscles and multifidi muscles of the spine are in the same homologous column and, therefore, have the same constraints.  On the side of medial rectus weakness you will see hypotonic (decreased tone) musculature, while on the dominant side you will see increased tone. 





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