Dilated pupils in healthy people are due to the darkening of the ambient light. The pupils appear significantly dilated to allow the pupils to pass more light for clearer vision is not a disease and does not need to be treated. If coma or unconsciousness with dilated pupils represents a critical condition, the patient is at risk of death at any time and should immediately call 120 to the hospital for resuscitation. If eye pain or other discomfort such as loss of vision or vision with dilated pupils may be glaucoma, the patient should be seen immediately by the hospital ophthalmologist to avoid delaying the condition leading to permanent vision loss.