Photopsia: Understanding the Brain’s Visual Illusions
Definition and Etiology of Photopsia Photopsia, derived from the Greek words meaning “light” (phos) and “to see” (opsis), is defined in ophthalmology and neurology as the subjective experience of light flashes, sparks, or streaks when there is no external physical stimulus present to account for the sensation. These visual phenomena are categorized as positive scotomas […]
MUSCAE VOLITANTES
Conceptual Framework and Etymological Origins of Muscae Volitantes The term muscae volitantes is derived from the Latin phrase meaning “flying flies,” a nomenclature that accurately captures the subjective visual experience of individuals who perceive small, mobile spots within their field of vision. These occurrences are categorized as entoptic phenomena, which refers to visual effects whose […]