Human Eyes and Defects of Vision
Human Eyes and Defects of Vision: Overview
This topic covers concepts, such as Power of Accommodation, Least Distance of Distinct Vision, Aqueous Humour, Cornea, Iris, Ciliary Muscle, Pupil, Retina, Vitreous Humour, Human Eye, Optic Nerve, Common Defects of Eyes, Myopia, Hypermetropia, etc.
Important Questions on Human Eyes and Defects of Vision
Increase in the converging power of eye lens cause hypermetropia.
The term “accommodation” as applied to the eye, refers to its ability to:
There are artificial and natural sources of light.
Explain about different sources of light.
What is the importance of light in our daily lives?
We see objects due to the presence of light.
Vitreous humour fills the space between lens and retina.
Which of the following helps to keep the shape of the eye?
Vitreous humour is a transparent, colourless, gel like substance.
Explain how presbyopia can be cured.
Presbyopia can be corrected by using bifocal lens.
What is the nature of the image formed by eye lens? (Choose from the following: Real / Virtual)
The range of vision of a normal human eye is from to infinity.
Hypermetropic person has an elongated eye ball.
Name the defect of vision that is corrected can be corrected by bi-focal lens.
When you are looking at objects closer to the eye, the ciliary muscles ____ (contract/relax)
A person is unable to see distant objects. Which among the following diagram represents the defect of vision he is suffering from.
Kavita from is using spectacles. The power of the lenses in her spectacles is dioptre. Find the focal length (in ) of the lenses used in her spectacles.
The change in focal length of an eye lens is caused by the action of the
Which part of the human eye controls the amount of light entering into the eyes?
