The size of your pupils can say a lot about your health and your state of mind. In most cases, pupils change size based on the light and dilate, meaning that appear larger, when you're in a darker ...

Pupils naturally dilate in low light to allow more light into the eye, and also due to emotional or mental stimuli. Other causes of dilated pupils include medications given during an eye exam, various ...

His gaze softens as he draws closer to you. With one hand around your waist and the other cradling your jaw, he pulls you in. You look into his eyes, and notice his pupils have grown large and hungry.

Substance misuse causes severe side effects, affecting a person's general wellness. It affects their mental and physical health. One of the significant side effects is changes in the appearance of the ...

New pupillometry research reveals how post-traumatic stress disorder (PTSD) may affect both branches of the autonomic nervous system. By measuring how someone's pupils dilate and constrict in response ...

New pupillometry research reveals how post-traumatic stress disorder (PTSD) may affect both branches of the autonomic nervous system. By measuring how someone's pupils dilate and constrict in response ...

Add Yahoo as a preferred source to see more of our stories on Google. Pupils often dilate in response to low light. Radu Bighian/Getty Images Dilated pupils mean that your pupils appear larger in size ...