What is the average range for pupil size in near total darkness?

The average range for pupil size in near total darkness is typically between 5.0 mm and 8.5 mm. In low-light conditions, the pupils dilate to allow more light to enter the eye, which aids in vision. When assessing pupil size, medical professionals and drug recognition experts often refer to these ranges to determine normal physiological responses.

Pupil response can indicate a person's condition and potential impairment. The range provided is based on clinical observations and studies of human anatomy under varying light conditions. Recognizing the standard pupillary response is essential for understanding how different substances might affect an individual's nervous system, especially in the context of drug influence.

Other ranges presented in this set of choices either fall outside the normal physiological range or are based on specific drug effects that exaggerate dilation. As such, the option indicating 5.0 mm to 8.5 mm reflects a baseline for what is expected in near total darkness for healthy individuals.