Holding Two Index Fingers in Front of the Eyes Can

question 36

Multiple Choice

Holding two index fingers in front of the eyes can create the perception of a floating finger sausage.This best illustrates the effect of

• A) relative height.
• B) retinal disparity.
• C) interposition.
• D) relative luminance.

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Definitions:

Melanin

A natural pigment found in most organisms, responsible for the color of skin, hair, and eyes, and protection against UV radiation.

Albinism

A genetic condition marked by the absence of melanin pigment in the skin, hair, and eyes, leading to light pigmentation and vision problems.

Cyanosis

A bluish discoloration of the skin and mucous membranes due to the presence of deoxygenated hemoglobin in blood vessels near the skin surface.

Blood Vessels

Tubular structures that transport blood throughout the body, including arteries, veins, and capillaries.