the lightning almost takes away their vision. when the lightning brightens their surroundings they walk and when it is dark they stand still. had god wanted he could have taken away their hearing and their vision. god has power over all things.
يكاد البرق يخطف أبصارهم كلما أضاء لهم مشوا فيه وإذا أظلم عليهم قاموا ولو شاء الله لذهب بسمعهم وأبصارهم إن الله على كل شيء قدير