The healthy eyes have a natural ability to converge on an object seen in such a way that the image is at most in the center of the yellow spot. You have certainly noticed that when looking at near objects the eyes converge naturally, while in the case of far objects the eyes set practically in parallel to each other. In both cases our sight has an extraordinary ability to keep the near and far objects in high sharpness. Of course, this refers only to the healthy sight with no convergence disorder.
The proper convergence allows deep and correct reception of the depth of sharpness of the world in 3D. The brain is able to automatically collect the images from the right and left eye in one three-dimensional whole. This ability helps us, among others, to assess the distance from us to the seen objects. Convergence disorder, when not treated medically, can lead to the development of the convergent or divergent squint.
More information on this defect can be found here
These exercises use the charts for improvement of sight convergence. Their main aim is to generate a seeming image, which allows to work with each eye individually, strengthen coordination between the eyes and improve the functionality of eye convergence.
Squint (strabismus) is the eye defect that manifests itself with the weakening of eye muscles, which causes the change of the visual angle of one eye against the other. The effect of the squint is the impaired stereoscopic vision.
More information on this defect can be found here
When doing the exercises for the correction of squint, we need to adjust “the position” of muscles, that is, try to improve the eye coordination and restore it to the natural balance. The treatment of squint using vision exercises can be divided into 2 stages:
This exercise was developed by Clara Hackett with the aim to relax the eyes and make them work together.
This exercise is proposed by Janet GoodRich and as the name suggests, it involves the movement of any object back and forth like the musician playing the trombone.