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The function of iris is to regulate the amount of light entering the eye by adjusting the size of
- a)Pupil
- b)Cornea
- c)Iris
- d)Retina
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The function of iris is to regulate the amount of light entering the e...
Iris is located behind the cornea and is a dark muscular diaphragm that controls the size of the pupil. The pupil regulates and controls the amount of light entering the eye. When bright light falls on the eye the pupil contracts so that less light can enter the eye. However, when dim light falls on the eye the pupil expands so that more light can enter the eye.
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The function of iris is to regulate the amount of light entering the e...
The Function of Iris in Regulating Light Entering the Eye
The iris is a colored, ring-shaped membrane behind the cornea of the eye. Its main function is to regulate the amount of light entering the eye by adjusting the size of the pupil.
Regulating Pupil Size
- The pupil is the black circular opening in the center of the iris through which light enters the eye.
- The iris contains muscles that control the size of the pupil.
- In bright light, the iris constricts the pupil, making it smaller to reduce the amount of light entering the eye.
- In dim light, the iris dilates the pupil, making it larger to allow more light to enter.
Protecting the Eye
- The iris also plays a role in protecting the eye from potentially harmful levels of light.
- By adjusting the size of the pupil, the iris helps to regulate the amount of light that reaches the retina at the back of the eye.
- This helps to prevent damage to the sensitive cells in the retina that are responsible for vision.
Importance of Iris Function
- The ability of the iris to regulate the amount of light entering the eye is crucial for maintaining clear vision in varying lighting conditions.
- Without this function, the eye would be overwhelmed by too much light in bright conditions or struggle to see in low light situations.
- The iris works in conjunction with other parts of the eye, such as the cornea and lens, to ensure that light is focused properly on the retina for clear vision.
The iris is a colored, ring-shaped membrane behind the cornea of the eye. Its main function is to regulate the amount of light entering the eye by adjusting the size of the pupil.
Regulating Pupil Size
- The pupil is the black circular opening in the center of the iris through which light enters the eye.
- The iris contains muscles that control the size of the pupil.
- In bright light, the iris constricts the pupil, making it smaller to reduce the amount of light entering the eye.
- In dim light, the iris dilates the pupil, making it larger to allow more light to enter.
Protecting the Eye
- The iris also plays a role in protecting the eye from potentially harmful levels of light.
- By adjusting the size of the pupil, the iris helps to regulate the amount of light that reaches the retina at the back of the eye.
- This helps to prevent damage to the sensitive cells in the retina that are responsible for vision.
Importance of Iris Function
- The ability of the iris to regulate the amount of light entering the eye is crucial for maintaining clear vision in varying lighting conditions.
- Without this function, the eye would be overwhelmed by too much light in bright conditions or struggle to see in low light situations.
- The iris works in conjunction with other parts of the eye, such as the cornea and lens, to ensure that light is focused properly on the retina for clear vision.
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The function of iris is to regulate the amount of light entering the eye by adjusting the size ofa)Pupilb)Corneac)Irisd)RetinaCorrect answer is option 'A'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The function of iris is to regulate the amount of light entering the eye by adjusting the size ofa)Pupilb)Corneac)Irisd)RetinaCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The function of iris is to regulate the amount of light entering the eye by adjusting the size ofa)Pupilb)Corneac)Irisd)RetinaCorrect answer is option 'A'. Can you explain this answer?.
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