December 11th
2009

Eye Exercises  ⁄  Myopia and Vergence Training

This is a continuation of the inner game of vision. Imagine the visual axis of an eye as a ray that emanates from the fovea, the center of the macula (the most sensitive part of the retina), and passes through the center of the corresponding lens. As a result, our eyes are like two spotlights that illuminate the object. The inward or outward turning movement of the eyes is convergence or divergence. We converge the ocular rays when we gaze at a nearby object and diverge the ocular rays looking into the distance. The difference between the myopic ocular ray and emmetropic (the normal condition of perfect vision) ocular ray is in the diameter of the light spots. A myopic light spot is dispersed and large. Inversely, an emmetropic spot is focused and narrow. In other words, the myopic eye looks like a headlight and the myopic ocular ray has the form of a cone, whereas the emmetropic eye looks like laser with precision direction of ocular ray. The difference is in the power of illumination of the object. One of the right visual skills for the inner game of vision (level 1) is that narrow ocular rays intersect on the object.


Lesson 15 – Myopia and Vergence Training

Look at the picture below. The ocular rays intersect at point P. The image of point P will fall on the center of the macula of each eye, and the two images will be fused. In contrast, point C (point of convergence) lies inside the two ocular rays.  The right eye perceives point C as being to the left of center, and the left eye perceives point C as being to the right of center. So we perceive two images of point C. Point D (point of divergence) lies outside the two ocular rays.  The right eye perceives point D as being to the right of center, and the left eye perceives point D as being to the left of center. So we perceive two images of point D also.

point_of_intersection1

Now look at the picture below. If you are looking at the screen surface, you see two parts of one image. Let’s fuse the two parts into one.

cat_1

Hold your index finger between your nose and the screen. Now your ocular rays intersect at point P, which is situated on the screen surface. Point C is situated on your finger-tip, and you see two images of your index finger:

cat_21

Now relax the medial rectus muscles and intersect your ocular rays at point D behind the screen. Points P (screen surface) and C (finger-tip) lie inside the two ocular rays.  The right eye perceives points P and C as being to the left of center, and the left eye perceives points P and C as being to the right of center. So we perceive four images on the screen and two images of an index finger. After fusing the middle images we can see a picture like this:

cat_3

Now intersect your ocular rays at point C, at the finger-tip. Point P lies on the screen, outside the two ocular rays.  The right eye perceives point P as being to the right of center, and the left eye perceives point P as being to the left of center. Fuse the middle image and you will see a picture like this:

cat_4

This exercise is very useful for improving proper visual skills, for playing the inner game of vision, and for better eyesight as result.

Love your eyes… play the inner game of vision…

Get rid of myopia naturally.

Dr. Arkadiy Davydov

5 Responses

  1. mat:

    20.01.2010 at 17:31 #

    Dear Doc, this vergence training is good for myopia. This morning I played with it while reading small print (at about 50 cm). When I intersected the central rays behind the line of text, it became clearer, bigger and blacker. Afterwards, while walking I began moving my focus forwards and backwards(instead of just from side to side) which felt liberating. So I am looking forward to a succesful career in central ray control.
    Have a nice ray, pardon, day.
    Mat

  2. Hawi:

    10.07.2011 at 17:24 #

    For the last step. “Now intersect your ocular rays at point C… ” the cats appear blurred is that normal?

  3. Doc:

    12.07.2011 at 08:58 #

    Hawi, it is normal. To complete fusion you should do the dynamic convergence with identical symbols.

  4. Gaurav Sharma:

    15.04.2014 at 01:54 #

    I can make both the images converge and make a cat, without the finger thing. Is that normal?

  5. Doc:

    15.04.2014 at 08:41 #

    Gaurav, yes. That’s normal, you have a good eye control while doing convergence. What about the fusion in divergence?

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