MCOLES State Licensing Practice Exam

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What is 'Resting Nystagmus' characterized by?

Jerking of the eyes as they look straight ahead
Rapid blinking of the eyes
Involuntary focus shift
Blurry vision when moving

The correct answer is: Jerking of the eyes as they look straight ahead

Resting Nystagmus is characterized by jerking of the eyes while they are looking straight ahead. This phenomenon occurs when the eyes exhibit involuntary oscillations or movements even when the individual is not making any intentional eye movement or fixating on a target. These involuntary movements can indicate various neurological conditions or substance influence, making it relevant in fields such as law enforcement and medical assessments. In the context of the other choices, rapid blinking of the eyes does not specifically define Resting Nystagmus, as it refers to a different type of movement that can occur due to various factors, such as irritation or fatigue. Similarly, an involuntary focus shift points more to conditions such as strabismus or other eye disorders rather than the specific characteristic of nystagmus. Lastly, blurry vision when moving is not a defining feature of Resting Nystagmus; while nystagmus can affect vision, blurry vision itself is a separate issue that may arise from a range of visual or neurological problems. Thus, the defining trait of resting nystagmus remains the consistent jerking of the eyes while looking straight ahead.