Medically reviewed by Christine L. Larsen, MD Medications, trauma, and medical conditions can lead to abnormally small pupils ...

Nocturnal animals tend to have proportionally bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than ...

pupil movement might one day be used to detect disorders such as insomnia and post-traumatic stress disorder, or even a comatose patient’s recovery. We haven’t yet figured out if eyes are ...

If evolution occurs through gradations, the critics say, how could it have created the separate parts of the eye -- the lens, the retina, the pupil ... use the range of less complex light ...

In particular, they found that the more a person's eyes dilated during the task ... was that the lowest performers on the ...

Human eyes are actually spheres. The part that we can see is only just the front. That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye ...

Neurologists shine light into the eyes of trauma and stroke ... when visual stimuli was more or less interesting, indicating a relationship between the pupil’s movement and cognitive state ...