“We used to think that the pupil was a simple light reflex or that it just indexed arousal,” says Stefan Van der Stigchel, an attention and perception researcher at Utrecht University in the ...

Typically, the pupil contracts and dilates depending on the amount of light entering the eye. Neurologists shine light into the eyes of trauma and stroke patients to gauge their light reflex 1 ...

A research team has established an innovative intracranial pre-olivary pretectal nucleus (OPN) optic tract injury model ...

When light comes into the eye ... images are highly dependent on direction of a child’s gaze when the pupil fundus reflex is captured. It is often helpful to ask the parents to use their ...

The most common reason for dilated pupils is low light in a dark room since lower light causes your pupils to grow. Dilated pupils are also caused by drug use, sexual attraction, brain injury ...

The amount of light entering the eye is controlled by a reflex action. The size of the pupil changes in response to bright or dim light. This is controlled by the muscles of the iris.

Refracts light as it enters the eye (by a fixed amount). Iris Coloured part of the eye that contains muscles. These relax or contract to adjust the size of the pupil. Controls how much light ...