Complete Color Blindness Results in a Perception of the World

question 215

Multiple Choice

Complete color blindness results in a perception of the world only in black and white and is a result of

• A)cones that are missing or function abnormally.
• B)rods that fail to function under higher levels of illumination.
• C)excessive pigmentation of the cornea, a result of genetic factors.
• D)a lens that has lost its elasticity and can no longer focus the image appropriately on the retina.

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Definitions:

Congestive Heart Failure

A complex condition of inadequate heart action with retention of tissue fluids; may be either right- or left-side failure, or both.

Chronic Glomerular Nephritis

A long-term kidney condition marked by inflammation and damage to the glomeruli, impairing kidney function.

Renal Failure

A medical condition where the kidneys lose the ability to filter waste products from the blood effectively.

Cystitis

An inflammation of the bladder, often caused by infection and characterized by frequent, painful urination.