Final answer:
The rapid, involuntary movement of the eyes is known as nystagmus, which differs from voluntary saccadic movements that are part of normal visual scanning.d. nystagmus.
Step-by-step explanation:
The rapid, involuntary movement of the eye(s) is termed as d. nystagmus.While saccades are rapid, voluntary and conjugate eye movements made to visually explore the environment, nystagmus specifically refers to involuntary, rapid movement of the eyes, often oscillating horizontally or vertically. Saccadic movements are a normal and necessary function for visual tracking and scanning, but nystagmus is generally a sign of a problem within the visual system or brain. It can be a symptom of various conditions including inner ear disorders, neurological issues, or a side effect of medication. Unlike saccades, nystagmus can impair vision by making it difficult to steadily gaze upon an object, causing visual disturbances and affecting balance and coordination.
The rapid, involuntary movement of the eye(s) is termed as nystagmus. Nystagmus is the repetitive, uncontrolled movement of the eyes, typically characterized by a side-to-side or up-and-down motionIt is caused by abnormal functioning of the muscles and nerves that control eye movement. Nystagmus can result from various factors, including neurological conditions, medications, and inner ear disorders.