Class 10 Exam > Class 10 Questions > What is the main cause of myopia?a)Decrease ...
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What is the main cause of myopia?
- a)Decrease in focal length of the eye lens
- b)Elongation of the eyeball
- c)Increase in focal length of the eye lens
- d)Decrease in size of the eye lens
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What is the main cause of myopia?a)Decrease in focal length of the ey...
The Main Cause of Myopia
Myopia, commonly known as nearsightedness, is a visual condition where distant objects appear blurry while close objects can be seen clearly. The primary cause of myopia is the elongation of the eyeball.
Understanding Elongation of the Eyeball
- The eyeball is normally round, allowing light to focus correctly on the retina.
- In myopia, the eyeball becomes elongated from front to back.
- This elongation means that light rays entering the eye converge before they reach the retina.
Effects of Myopia
- When light is not focused directly on the retina, it leads to blurred vision for distant objects.
- Individuals with myopia often find it difficult to see clearly when looking at things far away, such as road signs or a blackboard in class.
Other Contributing Factors
- Genetics: Myopia can run in families, indicating a genetic predisposition.
- Environmental Factors: Prolonged close-up work, such as reading or using screens, can contribute to the development of myopia.
- Lack of Outdoor Activity: Studies suggest that spending more time outdoors may help reduce the risk of developing myopia.
Conclusion
Understanding that the elongation of the eyeball is the main cause of myopia helps identify the nature of the condition. Treatment options include corrective lenses, contact lenses, or refractive surgery, depending on the severity of the condition. Recognizing these factors can aid in prevention and management strategies for maintaining good vision health.
Myopia, commonly known as nearsightedness, is a visual condition where distant objects appear blurry while close objects can be seen clearly. The primary cause of myopia is the elongation of the eyeball.
Understanding Elongation of the Eyeball
- The eyeball is normally round, allowing light to focus correctly on the retina.
- In myopia, the eyeball becomes elongated from front to back.
- This elongation means that light rays entering the eye converge before they reach the retina.
Effects of Myopia
- When light is not focused directly on the retina, it leads to blurred vision for distant objects.
- Individuals with myopia often find it difficult to see clearly when looking at things far away, such as road signs or a blackboard in class.
Other Contributing Factors
- Genetics: Myopia can run in families, indicating a genetic predisposition.
- Environmental Factors: Prolonged close-up work, such as reading or using screens, can contribute to the development of myopia.
- Lack of Outdoor Activity: Studies suggest that spending more time outdoors may help reduce the risk of developing myopia.
Conclusion
Understanding that the elongation of the eyeball is the main cause of myopia helps identify the nature of the condition. Treatment options include corrective lenses, contact lenses, or refractive surgery, depending on the severity of the condition. Recognizing these factors can aid in prevention and management strategies for maintaining good vision health.
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What is the main cause of myopia?a)Decrease in focal length of the ey...
Myopia, or shortsightedness, is primarily caused by the elongation of the eyeball, leading to the inability to see distant objects clearly. This elongation affects the focusing of light onto the retina, resulting in blurry vision for faraway objects.
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What is the main cause of myopia?a)Decrease in focal length of the eye lensb)Elongation of the eyeballc)Increase in focal length of the eye lensd)Decrease in size of the eye lensCorrect answer is option 'B'. 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 What is the main cause of myopia?a)Decrease in focal length of the eye lensb)Elongation of the eyeballc)Increase in focal length of the eye lensd)Decrease in size of the eye lensCorrect answer is option 'B'. 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 What is the main cause of myopia?a)Decrease in focal length of the eye lensb)Elongation of the eyeballc)Increase in focal length of the eye lensd)Decrease in size of the eye lensCorrect answer is option 'B'. Can you explain this answer?.
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