Introduction Changes to the pupillary light reflex (PLR) have been demonstrated in traumatic brain injury and in adolescents with a history of concussion. Assessment of changes to the PLR following ...

It is the muscular curtain that sits near the front between the cornea and the lens. The iris determines the size of the ...

Reflexes. The pupillary light response test is used to evaluate cranial nerves II and III but is not an absolute test of vision. A bright focal light source, such as a direct ophthalmoscope or ...

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.