1. Take any stable posture, straighten your back and head.
2. Look at the moon.
3. Carefully peer into the centre of the moon, trying to reduce the field of view to the size of the lunar disk. Watch wide-open, relaxed eyes without blinking.
4. The eyes should be relaxed. You can watch from 3 to 10 minutes, preferably at an angle of 45 degrees - so eyes get tired less.
5. With a short exposure, the exercise is best repeated several times.
6. Relax your eyes.
People with an unstable nervous system shouldn't look at the moon. Healthy people are encouraged to focus on the moon or on its reflection in a body of water (which is even preferable) once a week.
Fixing the gaze on stars, clouds, on open spaces, etc. also greatly benefits vision.
Fixing the gaze to the moon and its reflection is very useful for the eyes. It is recommended to look at the Moon or at its reflection from 1 to 3 times a week.
Text: From Ar Eddar's book “The Beginning of Hatha Yoga”