Is one considered sinful for looking at a lamp that was flickering on and off during prayer, fearing its fall, then remembering the prohibition against looking up at the sky during prayer? And does moving the closed eyes upwards count as looking up at the sky?

Looking up at the sky during prayer is disliked by most scholars, and some have said it is forbidden. Al-Shawkani argued that punishment with blindness would only occur for something forbidden. As for closing the eyes and moving them upwards, if the gaze is towards the Qibla, it is not prohibited. However, if it is towards the sky, then it is the forbidden action.