Potentially, although there are not a lot of definitive studies on this. Because general understanding of the actual reason (not the mechanism) for our eyes dilating in certain situations is unknown, there has been some information that shows your pupils can dilate due to stress (this is what’s called “anecdotal evidence”). Some doctors have seen stress lead to dry eyes, twitching eyelids, and occasionally yes, dilated pupils, but there is more evidence pointing to those situations being rare. More common, regarding stress and dilated pupils, is if someone is experiencing shock. A person in shock will have other symptoms such as chest pain, labored breathing, severe pain, and can also include slow or weak pulse, nausea, shaking/shivering, and dilated pupils.