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What Is the Function of a Snellen Chart

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What is the function of a Snellen chart?


Definitions:

Drive-Reduction

A theory in psychology that posits behavior is motivated by the desire to reduce internal drives related to basic physiological needs.

Homeostatic

Pertaining to homeostasis, the process by which living organisms regulate internal conditions to maintain a stable, constant state.

Disequilibrium

Disequilibrium refers to a lack of balance or stability in either a physical, psychological, or economic context, often leading to a change or correction.

Needs

refer to the basic requirements or essentials necessary for an individual's well-being, including physical, emotional, and social aspects.

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