Review Of Pupillary Light Reflex Pathway Ideas. Web the plr (pupillary light reflex) can be a marker for pathological medical conditions, such as neurodegenerative or mental health disorders and diseases as well as marker for physiological alterations, such as age, sex or iris color. Published in neurology 18 march 2008.
Web the pupillary light reflex (plr) describes the constriction and subsequent dilation of the pupil in response to light as a result of the antagonistic actions of the iris sphincter and dilator muscles. The pupillary light reflex pathway is similar to the visual pathway; Light travels through the cornea, anterior chamber, pupil, lens, and the posterior chamber, eventually reaching the retina.
