Feedback Mechanism Of Visual Rehabilitation Training

In the process of visual rehabilitation training, patients will have a variety of sensory feedback clues to experience the changes of adjustment and binocular vision. At the same time, trainers can also understand the state of patients in training through these feedback clues and give corresponding guidance.

1. Obscure

The existence of blur means that the human eye adjustment does not produce accurate focus, and the patient should eliminate the blur through the control change of the adjustment system.

2. Diplopia

Diplopia is a very powerful feedback clue and easy to explain and describe to the patient. If the patient has diplopia during training, it means that he has not aligned his eyes. Some methods should be used to eliminate diplopia.

3. Suppress

In binocular vision rehabilitation training, it is necessary to detect whether there is inhibition. For example, many visual markers are marked with "R" and "L", which can only be seen by the right eye or the left eye respectively. When only one letter can be seen, it means that one eye is inhibited.

4. Gloss

When patients fuse two visual targets of different colors, the resulting perception of color mixing is called gloss. If there is no gloss clue, it has no clinical significance, indicating that one eye is inhibited.

5. Muscle movement perception

In visual rehabilitation training, a very important point is to let the patients feel the activities of adjustment and dispersion, such as the different feelings of the eyes when adjusting relaxation and tension, such as the tension of the eyes when adjusting.

6. Silo (small in large out) reaction

Silo refers to the feedback that is often used when training convergence and dispersion. It refers to the perceptual change experienced by patients who still maintain fusion image when changing the needs of collection or dispersion. When the collection demand increases but the patient still maintains the fusion image, the visual target looks smaller and close to the patient; When the dispersion demand increases, but the patient still maintains the fusion image, the visual target looks larger and away from the patient.

7. Float

This feedback is part of the silo response. When changing the collection or dispersion needs in visual rehabilitation training, the visual target will be perceived to float near or far away. When assembled, the sight mark appears to drift closer; When dispersed, the sight mark appears to drift away.

8. Positioning

It is a very valuable feedback clue in gathering and dispersing visual rehabilitation training. By asking the patient to point out the position of the perceived visual target as feedback to generate aggregation or dispersion. For example, during the gathering and dispersion training of rope loops, when the collection demand is increased, the patient will locate the visual target in the space closer and closer to himself.

9. Parallel parallax

It refers to the movement of the fusion target when the patient moves. When there is a collective demand, the moving direction of the visual target is the same as that of the patient; When there is a need to spread, the moving direction of the visual target is opposite to that of the patient.