What is the ruling on a blind person turning aside during prayer—whether as an Imam or a congregant—especially if this is repeated within a single prayer, and does this affect the validity of their prayer?

The worshipper is commanded to be humble and silent, to face the Qiblah, and it is recommended to look at the place of prostration. Turning away is disliked unless it reaches the point of turning one's back to the Qiblah, in which case the prayer becomes void. Excessive turning may invalidate the prayer because it is an intentional act.