Jul 25, 2023 · Pupillary light reflex is used to assess the brain stem function. Abnormal pupillary light reflex can be found in optic nerve injury, oculomotor nerve damage, brain stem lesions, …

The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity of light that falls on the retinal ganglion cells of the retina in …

When you’re in bright light, your pupil constricts and gets smaller. When the light is dim, your pupil dilates and gets bigger. The name of this reaction is the pupillary light response. The pupil has …

When light reaches a pupil there should be a normal direct and consensual response. An RAPD is diagnosed by observing paradoxical dilatation when light is directly shone in the affected pupil …

Dec 14, 2021 · PUPILLARY REFLEXES:-There are all total three pupillary reflexes – Light reflex, Near reflex and Psychosensory reflex. Light Reflex: When light is shone to either of the eyes …

Light passes through the surface of the lens that is exposed by the pupil, and is focused onto the retina in the back of the eye. The pupil normally appears black, because the inside of the eye …

Sep 2, 2024 · Loss of pupillary light reflex can occur as a result of various underlying conditions affecting the nervous system, eye, or systemic health.

Jan 20, 2025 · What is the Lack of Light Reaction? The lack of light reaction, also known as the absence of pupillary light reflex, is a condition in which the pupil does not constrict in response …

Aug 8, 2023 · The visual (retino-thalamocortical) pathway and pupillary light reflex pathway are the two essential ways through which the eye perceives and responds to changes in the …

Sep 30, 2024 · Simply put, it’s the way our pupils react to changes in light and focus. In a healthy brain, pupils constrict (get smaller) when exposed to bright light and dilate (get bigger) in …