Functions of Different Organs in the Human Eye
Trending Questions
Which of the following statements is correct regarding cornea?
The cornea consists of a dense matrix of collagen and is the most sensitive portion of the eye.
The cornea is an external, transparent, and protective proteinaceous covering of the eye-ball.
The cornea consists of dense connective tissue of elastin and can repair itself.
The cornea is a convex, transparent layer that is highly vascularised.
It is a beautiful scenery. Change into exclamatory sentence
Statement II: Rods are sensitive to dim light.
- Statement I is correct
- Both the statement are incorrect
- Both the statements are correct
- Statement II is correct
What happens to the size of the pupil of our eye in bright light?
Explain why, we cannot see our surroundings clearly when we enter a darkened cinema hall from bright sunshine but our vision improves after some time.
Which cell is visible to the human eye?
- Measure more or less the light entering into the eyes
- Catch image formed by the lens
- Refract light
- Give colors to the eye
Fill in the blanks in the following.
Night birds have _________ cones than rods in their eyes.
Explain how you can take care of your eyes.
Write the names of the main parts of the human eye.
How does the eye-lens differ from the ordinary convex lens made of glass?
What is the name of transparent front part of an eye?
How does eye adjust itself to deal with light of varying intensity?
The most comfortable distance at which one can read with a normal eye is about ________ cm.
15
20
25
30
At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is possible at that spot. This area is called the
The lens focuses light on the back of the eye, on a layer known as
Cornea
Iris
Pupil
Retina
Example(s) of optical aids for visually challenged people is/are:
- Echolocation
- Using tongue to see
- Magnifying lens
- Braille writer
Which part of the eye gives it its distinctive colour ?
What happens to the size of the pupil of our eye in dim light?
What is the name of a small opening in the iris of an eye?
- Night-blindness
- Presbyopia
- Hypermetropia
- Myopia
What is the function of the following -
a - pupil
b- cornea
c- retina
d- iris
e - eye lids
d- optic nerve
d- siliary muscles
What is the role of the eyelids?
- Ciliary muscles
- Aqueous humor
- Vitreous humor
- None of these
What part protects eyes from any object entering the eye and also shut out light when not required?
Draw a labelled sketch of the human eye.
- retina
- aqueous humor
- blind spot
- cornea
Fill in the following blanks with suitable words:
(a) The angle of ................... equals the angle of reflection.
(b) A person 1 m in front of a plane mirror seems to be ................... m away from his image.
(c) If you touch your ................... ear with right hand in front of a plane mirror, it will be seen in the mirror that your right ear is touched with ...................
(d) The size of pupil becomes ................... when you see in dim light.
(e) Night birds have ...................cones than rods in their eyes.
(f) The image of an object persists on the retina of an eye for about ................... second even after the object has disappeared.
(g) If the still pictures of a moving object are flashed on our eyes at a rate faster than ................... pictures per second, the eye perceives the object as moving.
(i) In a movie, the still pictures in proper sequence are projected on the screen usually at the rate of ................... pictures per second.
The size of the pupil of the eye is adjusted by:
(a) cornea
(b) ciliary muscles
(c) optic nerve
(d) iris
