Podcast
Questions and Answers
What is the reason for the defect mentioned in the text?
What is the reason for the defect mentioned in the text?
- Decreasing flexibility of the cornea
- Decreasing flexibility of the pupil
- Gradual weakening of the retinal muscles
- Gradual weakening of ciliary muscles (correct)
What type of lenses are recommended for correcting the defect discussed?
What type of lenses are recommended for correcting the defect discussed?
- Convex lenses
- Bifocal lenses (correct)
- Prismatic lenses
- Concave lenses
What does the upper portion of a bifocal lens usually consist of?
What does the upper portion of a bifocal lens usually consist of?
- Prismatic lens
- Convex lens
- Colored lens
- Concave lens (correct)
What is the angle between the lateral faces of a prism called?
What is the angle between the lateral faces of a prism called?
What phenomenon occurs when white light passes through a glass prism?
What phenomenon occurs when white light passes through a glass prism?
Who was the first to obtain a spectrum of sunlight using a glass prism?
Who was the first to obtain a spectrum of sunlight using a glass prism?
Why does the sky appear dark instead of blue to an astronaut?
Why does the sky appear dark instead of blue to an astronaut?
What is the nature of the image formed by our eye?
What is the nature of the image formed by our eye?
What is the phenomenon responsible for the blue color of the sky?
What is the phenomenon responsible for the blue color of the sky?
How can you remove the defect of vision 'Presbyopia'?
How can you remove the defect of vision 'Presbyopia'?
What is the phenomenon responsible for the formation of a rainbow?
What is the phenomenon responsible for the formation of a rainbow?
What do you understand by 'Power of Accommodation'?
What do you understand by 'Power of Accommodation'?
What is the main function of the ciliary muscles in the eye?
What is the main function of the ciliary muscles in the eye?
How does the eye lens accommodate to allow clear vision of nearby objects?
How does the eye lens accommodate to allow clear vision of nearby objects?
What happens to the eye lens when the ciliary muscles relax?
What happens to the eye lens when the ciliary muscles relax?
What is the effect of the iris contracting on the pupil size?
What is the effect of the iris contracting on the pupil size?
How does the power of accommodation in the eye help in vision?
How does the power of accommodation in the eye help in vision?
What is the significance of the near point of the eye being 25cm?
What is the significance of the near point of the eye being 25cm?
