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Eye Anatomy

Horizontales
Smooth muscle diaphragm that regulates the amount of light entering the eye
Photoreceptors that respond to low light levels; responsible for images formed in black and white.
Area of greatest visual acuity
Sensory structure that converts light into nerve impulses.
Photoreceptors that respond to high light levels; responsible for the formation of colored images
Area where the optic nerve exits the eye; "blind spot"
Verticales
Highly vascular middle layer of the eye
Superficial protective layer of the eye
Deep layer of the eye containing photo receptors
Posterior portion of the vascular tunic; provides nutrients to the other layers of the eye
Sensory nerve responsible for vision; Cranial Nerve II
Thick transparent structure in the fibrous tunic responsible for 75% of the total refraction of light
Ring of smooth muscle that surrounds the lens; Responsible for changing the shape of the lens during accommodation
"white" of the eye
Central opening of the iris