Everyday figures of speech illustrate the unconscious connection between tension and eyesight:
Our shoulder and neck muscles positively or negatively influence our sense of sight. When we have complaints of tension in this area, it can immediately impair our vision. Headaches or migraines can produce the same results. From the other side, taxing your eyesight such as by looking at a computer monitor or working with a magnifier can lead to shoulder and neck muscle tension which will then over time again negatively impact your vision. It forms a vicious circle which can only be stopped by performing relaxation exercises.
You cannot always escape from everyday stress, but with some training you can reduce its influence on your vision. This type of psychological relaxation can be trained during “Palming” in the “Seeing Clearly” lesson. Not only will your vision become clearer, but your mind will become more composed.