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Which of the following are attributes of the retina?
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15. The Special Senses
Structure of the Eyeball
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What part of the retina contains only cones and is the area of greatest visual acuity?
A
Fovea centralis
B
Retinal periphery
C
Macula lutea
D
Optic disc
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Understand the structure of the retina: The retina is the light-sensitive layer of tissue at the back of the inner eye. It contains photoreceptor cells known as rods and cones.
Differentiate between rods and cones: Rods are responsible for vision at low light levels, while cones are responsible for color vision and function best in relatively bright light.
Identify the fovea centralis: The fovea centralis is a small depression in the retina where visual acuity is highest. It contains only cones and is responsible for sharp central vision.
Consider the macula lutea: The macula lutea is an oval-shaped pigmented area near the center of the retina. It surrounds the fovea and contains a high density of cones, but not exclusively.
Recognize the optic disc: The optic disc is the point of exit for ganglion cell axons leaving the eye. It contains no photoreceptors and is known as the blind spot.
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