When the Pupils Are Constricted

question 18

Multiple Choice

When the pupils are constricted,

• A) the retinal image is usually sharper.
• B) there is usually greater depth of focus.
• C) vision is poor in dim illumination.
• D) all of the above
• E) both B and C

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Definitions:

Intensity

The degree or magnitude of strength, force, energy, or feeling in a given situation or process.

Priming

The process by which exposure to a stimulus influences a response to a later stimulus, often without conscious guidance or intention.

Absolute Thresholds

The minimum intensity of a stimulus that one can perceive, meaning the lowest level at which an individual can experience a sensation.

Retinal Disparity

The difference in visual images that each eye perceives because of the different angles from which each eye views the world, important for depth perception.