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About the issue of restoring and improving the extrinsic ocular muscles’ coordination and central fixation/centralization

FAQ n. 28. Power Vision System - About the issue of restoring and improving the extrinsic ocular muscles’ coordination and central fixation/centralization, I’m following the Power Vision System and I’m getting much better:still 2 diopters per each eye, maybe at the moment just 1.5 thanks to the exercises you’ve proposed in your book.


I still have one problem I’m not able to resolve. When I look up, I notice that my right eye stops before the left one, and they don’t converge equally. Should I continue doing the exercises, looking up, till the extrinsic muscles around my right eye get relaxed, therefore becoming able to extend as much as the left eye’s muscles? Do you have any other exercise I can use for my right eye?



- Answers David De Angelis

A healthy eye is perfectly able to point/fix at an observed object in all the parts of the visual field (both in the central parts and the extreme ones—as when you look up or aside as much as you can). Perfect ocular coordination is the result of the extrinsic ocular muscles’ perfect functioning. After being rehabilitated, from the point of view of functioning, through different specific exercises (rotation and movement), the oculomotor muscles also restore their flexibility, strength, and consequently coordination between the right and the left eye that allows your eyes to do the work that is required for correct focusing.

Don’t forget that a healthy eye has a capability of “vibrating”, which is characterized by saccadic movements and a pointing/fixating ability at all levels of ocular movement and in all parts of the visual field, including the peripheral ones, which are not used when wearing glasses. Even visibly, when observing healthy eyes, you can notice a different ability of viewing. The eyes that suffer from high myopia have an almost missing gaze, without fixing at anything: indeed it’s so, since myopes have a very low ability of achieving central fixation (some authors call this ability“ centralization”).

Centralization or central fixation is the ocular ability of making the image fall on the central fovea. If the extrinsic ocular muscles are not well coordinated (because of low strength and flexibility at the edges of visual field), just one or both eyes make the image converge and fall out of central fovea—on the yellow spot (macula lutea).

The phenomenon is called “retinal eccentricity”; it is also responsible for low focusing ability. When the eyes get back their ability of coordinating (and there are some exercises like ocular rotations and their variants that bring about better coordination), they will also be able to point and focus correctly on the central fovea again. Furthermore, the eyes will also start to vibrate perfectly again, having restored their normal saccadic movement.

Sometimes, certain anomalies in coordinating are possible during muscular rehabilitation through the exercises of rotation(especially in rotation fixing at a point). It’s necessary to restore perfect coordination, staying in the parts where you feel the “knots,” when the eyes aren’t able to maintain binocular fixation(fixing at a point while rotating), which results in double vision.

These results show the problem of coordination between the eyes as well as your ocular symmetry imbalance. Little by little, persist on rotating while fixing at a point in those parts of the visual field where you have some problems in coordinating/fixing, and you’ll notice better coordination/fixation and consequently better visual acuity.

The extrinsic ocular muscles are the striated type and, therefore, are subject to the same rules of “plasticity” and adaptation as any other striated muscle of our body (biceps, triceps). So, it’s necessary to train the ocular muscles according to one’s specific needs and then to go further with the exercises of retinal defocus, as described in the Power Vision System. Keep in mind: At first the

exercises apply for muscular rehabilitation (like rotations), and the exercises of retinal defocus come later (with or without training lenses). Before learning to run, your muscles must walk.




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