What is the pupillary reflex? What does his absence indicate?

The pupil is capable of reflexively changing its diameter to regulate the level of light entering the inner parts of the eyeball. If such a reaction is absent, then this indicates a loss of consciousness, coma or death.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.