Bell’s Phenomenon: The Eye’s Hidden Defensive Reflex
Bell’s Phenomenon: The Protective Oculomotor Reflex The Core Definition of Bell’s Phenomenon Bell’s phenomenon is fundamentally characterized as a physiological defense reflex of the eye. It involves an involuntary, upward, and typically outward rotation of the globe of the eye (eyeball) when an individual attempts to forcefully close their eyelids. This movement is not an […]
Consensual Eye Reflex: Unlocking Your Brain’s Hidden Light
Introduction to the Consensual Eye Reflex (CER) The Consensual Eye Reflex (CER), also formally known as the consensual pupillary light reflex, represents a fundamental and critical component of the human nervous system’s response to light stimuli. This reflex is defined by the phenomenon wherein illumination applied to only one eye (the stimulated eye) results in […]
Bulbar Retraction Reflex: How Your Brain Protects Your Vision
Introduction to the Bulbar Retraction Reflex The Bulbar Retraction Reflex, often referred to simply as the BRR, is a fundamental, involuntary defense mechanism integral to the survival and protection of the ocular globe. Categorized as a complex cranial nerve reflex, its primary function is to rapidly withdraw the eyeball posteriorly into the orbital cavity when […]
Pupillary Light Reflex: How Your Eyes Reveal Inner States
Introduction and Nomenclature The Iritic Reflex, though a less commonly used descriptor, is scientifically synonymous with the Pupillary Light Reflex (PLR). This involuntary neurological mechanism governs the constriction and dilation of the pupil in response to changes in light intensity. The term “iritic” derives directly from the iris, the pigmented structure of the eye responsible […]