Describe how light entering the eye is regulated and focused on the retina. Describe the response of rods and cones to difference colors of light.

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Beverley SmithLv2

13 Mar 2018

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We perceive a change in hue from blue to red when the

		wavelength of the light increases
		wavelength of the light decreases
		amplitude of the light increases
		amplitude of the light decreases

We perceive a decrease in intensity when

		wavelength of the light increases
		wavelength of the light decreases
		amplitude of the light increases
		amplitude of the light decreases

We perceive an increase in intensity when

		wavelength of the light increases
		wavelength of the light decreases
		amplitude of the light increases
		amplitude of the light decreases

A ratio of light reaching a surface to light leaving asurface.

A measure of the visible light emitted in all directions

Unit of measure is the lumen.

Unit of measure is the Lux.

The rods ... (check all that apply)

		are best for viewing detail
		are located in around the periphery of the retina
		require more light than the cones
		are used for detecting motion in the periphery
		exist in three types: short, medium and long

The cones ... (check all that apply)

		are best for viewing detail
		are located only in the periphery of the retina
		require more light than the rods
		are used for detecting motion in the periphery
		exist in three types: short, medium and long

The fovea is

		where the optic nerve attaches to the eye
		an area of densely packed rods
		an area of densely packed cones
		the back of the eye where the rods and cones are located

The optic disk is

		where the optic nerve attaches to the eye
		an area of densely packed rods
		an area of densely packed cones
		the back of the eye where the rods and cones are located

Visual acuity is

		the ability to adjust to light levels.
		the ability to detect changes in contrast.
		the ability to detect detail.
		the ability to focus light on the retina.

Accommodation is

		the ability to adjust to light levels.
		the ability to detect changes in contrast.
		the ability to detect detail.
		the ability to focus light on the retina.

The retina is

		where the optic nerve attaches to the eye
		an area of densely packed rods
		an area of densely packed cones
		the back of the eye where the rods and cones are located