Area of most active vision in eye where sharp image is formed is calleda)Blind spotb)Yellow spotc)Lensd)PupilCorrect answer is option 'B'. Can you explain this answer?

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Answer

The yellow spot or macula is an oval yellow spot near the centre of the retina of the human eye. It has a size of 1.5 millimeters. It is specialized for seeing things with highest clearness or visual acuity. It is the area of best vision, where maximum amount of rod cells and cone cells are present.

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Answer

Option B is correct answer

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Yellow spot, in NCERT it is termed as macula lutea which is it's another name.

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Hume ni aata h

Answer

Yellow spot

The area of the eye where a sharp image is formed and the most active vision occurs is called the 'yellow spot' or the 'macula lutea.' This region is located in the center of the retina, which is the light-sensitive tissue at the back of the eye. The yellow spot is also known as the 'fovea centralis' and is responsible for central vision, including the ability to see fine details and colors.

Structure and Function

The yellow spot contains a high concentration of cone cells, which are photoreceptor cells responsible for color vision and visual acuity. Cone cells are densely packed in the fovea centralis, allowing for precise and detailed vision. In contrast, the surrounding areas of the retina contain a higher concentration of rod cells, which are responsible for peripheral vision and detecting low levels of light.

Sharp Image Formation

When light enters the eye, it passes through the cornea, pupil, and lens before reaching the retina. The lens helps to focus the incoming light onto the yellow spot, ensuring that a sharp image is formed. The curvature of the lens can be adjusted by the ciliary muscles to allow for accommodation, which is the ability to focus on objects at different distances.

Importance of the Yellow Spot

The yellow spot plays a crucial role in activities that require detailed central vision, such as reading, driving, and recognizing faces. It allows us to see fine details and perceive colors accurately. Without the yellow spot, our visual acuity and ability to discern details would be significantly impaired.

Blind Spot

The blind spot is an entirely different area of the eye. It is the point on the retina where the optic nerve exits the eye, and there are no photoreceptor cells present. This absence of light-sensitive cells creates a small region in our visual field where we are unable to detect light or form an image. However, our brain compensates for this blind spot by filling in the missing information based on the surrounding visual cues.

In conclusion, the area of most active vision in the eye where a sharp image is formed is the yellow spot or macula lutea. This region contains a high concentration of cone cells and is responsible for central vision, visual acuity, and color perception. It is distinct from the blind spot, which is the point on the retina where the optic nerve exits the eye and lacks photoreceptor cells.

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