Questions related to Human Eye
What is the time interval of firmness of vision in our brain? 1/16 S
What is the image formed on the retina of the normal eye? Real and upside down
What is the image formed on the retina of the normal eye? Real and upside down
Prey animals have two eyes located in opposite directions on their heads, so they have field of vision? maximum
Who generates electrical signals? Light Sensitive
What is the approximate time difference between the actual sunset and the apparent sunset? 2 min
The uppermost layer of the atmosphere appears to be dark because the absence of dust particles prevents the ——— of sunlight. dispersion
How many seconds does the image remain on the retina even after the object is removed? 1/10 S
Which colour light will be produced when the red and green squares of light meet? yellow
Which colour will get light when red and blue light mixes? Magenta
What would a red rose look like if it were seen in a green light? black
Does the retina convert light? In the electric signal
Who transmits the electrical signal generated by the retina to the brain? Optic nerve
What color would the sky appear if the earth had no atmosphere? Black
If the image of an object is formed behind the retina, then the person is suffering from which visual defect? Farsightedness
To which persons are the ‘driving license’ granted to drive a motor vehicle? Those who are not color blind
Within how many hours should the eye be removed for eye donation after death? Within 4 to 6 hours
Which type of lens is found in the human eye? convex len
What is the lens present in the human eye? convex len
Which point of the human eye is most sensitive to light? Yellow Point
Which image of the human eye is not sensitive to light at all? Blind Point
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. What is the reason for this happening? accommodation
Human eyes are two, so what is their field of vision? 180°
What is the maximum contaminated area of both the eyes of a human being? 180°
What is the approximate horizontal field of vision of one eye of a human being? 150°
Human eyes can easily see near and far things, which of the following is the reason for this? Accommodation
In dim light, whose sagging causes the pupil to dilate completely? iris of the eye
What is the primary colour of light? Red, Blue and Green
Light enters the eye through a thin membrane, this membrane is called? Cornea
Do the leaves of the tree look green because it reflects? Green Colour
Who controls the size of the pupil? iris of the eye
The screen is a soft microscopic membrane containing which type of cells are found in large numbers. Light Sensitive
Which ‘vision defect’ occurs due to excessive focal length of the eye lens? Farsightedness
Most of the light rays entering the eye are refracted? On the outer surface of the cornea
Is there an image made of an object in the eye? Real, upside down and small
What is the age limit of a person who donates eyes? Between 10 years to 60 years
Can you see when the eyeball is round? Near objects
What is the diameter of the eyeball? Approx. 2.3 cm
On which part of the eye is the image of an object formed? retina
What is the condition called if the crystalline lens of the eye becomes milky and curly? Cataract in vision impairment
What are the glasses of a person with nearsightedness? Concave lenses
Where is the image of an object formed in the eye of a person with nearsightedness? Before (forward) of the retina
——– does the distance of the eye lens decrease in nearsightedness? Focus Distance
A nearsighted person cannot see clearly objects more than ——- meters away? 1.2 m
What causes nearsightedness? Increased curvature of the eye lens
What causes nearsightedness? Longing of the eyeball
Which object cannot be seen clearly by a person suffering from myopia? Items kept away
Which lens is used to correct nearsightedness? Concave Lens
The defectless eye can easily see the object placed between 25 cm and infinity, what is the distance between it called? Vision Complex
Which colour has the maximum wavelength in visible light? ruby
Can eyes with farsightedness see clearly? Distant objects
Where is the image of an object formed in the eye of a person with farsightedness? Behind the retina
Vision defect can be corrected using which lens? convex len
What is the cause of visual impairment? Shortening of the eyeball
Is it used for the prevention of long-sightedness? convex len
What causes long sightedness? Excessive focal length of the eye lens
In Long Sightedness, the focal length of the eye lens is ———-? heighten
What object cannot be seen clearly by a person with long sightedness? Objects placed near
The eye which cannot see the near object clearly is present in that eye? Farsightedness
What happens in the eye which cannot see distant objects clearly? Myopia
What causes geriatric vision defect? Causes of reduced eye adjusting capacity
A person with slight farsightedness is treated with which type of lens? Bifocal
The upper part of the bifocal lens used in short distance vision is made of which lens? Concave Lens
The lower part of the bifocal lens used in farsightedness is made of which lens? convex len
Which lens can be used to correct Farsightedness? Bifocal Lenses
Why does farsightedness occur because the ability of the eye to adjust is ——? pitcher
When the lateral muscle of the eye contracts, the focal length of the eye lace ———? pitcher
When the ciliary muscles of the eye relax, the focal length of the eye lens becomes —–? heighten
When the ciliary muscles of the eye are relaxed, —— does the eye lens become ? thin
When looking at a near object, the ciliary muscles contract and the shape of the eye increases. round
Which cells are not present in the retina of a chick? Cone cell
Which sick person can donate eyes? Individuals suffering from diabetes
Which sick person can never donate eyes? Person suffering from AIDS and brain disease
Which type of eye defect occurs due to defect in cornea i.e. it is not perfectly spherical? astigmatism
———- is there a structure behind the cornea which is a set of black muscles? Iris
What is the part of the eye on which the image of an object falls is called? retina
Which lens can be used to correct long sightedness? convex len
In which defect of vision does the crystalline lens of the eye become cloudy opaque? Cataract in vision impairment
In which visual defect is the image of an object formed in front of the retina? In nearsightedness
When light with low intensity falls on the eye, the size of the pupil becomes ———–? Dried tiny balls of grounded pulse
What is the nearest point for a normal eye? 25 CM
What is the far point for a normal eye? endless
A prism divides the white light of the sun into how many colours? In seven colors
What does the whole world look like to a person with one eye? Two-dimensional shape
What is the degree of vision of a person with one eye? 150°
With the increase in age, the adjustment capacity in the human eye decreases, what is this defect called? Minor vision impairment
Why does the sky appear blue? Due to the over-scattering of blue light
In which part is the image formed in the eyes? Retina
What is the behavior of the eyes? Like a convex lens
Controls the amount of light entering the eye? Iris
Where are the different signals interpreted? In the brain
The process of adjustment in the eye lens is carried out by By ciliary muscles
The ability of the eye lens to adjust its focal length is called Adjustment Capacity
Is the focal length of the eye lens changed? By Ciliary Muscles
What type of lens is eye lens? convex len
Which type of lens in the glasses of a person with astigmatism eye defect prevents defects? With cylindrical lenses
By changing the focal length of your lens, you can see a distant or near object clearly, what is this property of the eye called? Adjustment Capacity
When light of extreme intensity falls on the eye, the size of the pupil becomes ———? short
What does the sky look like to travelers flying at high altitudes? Black
A student sitting in the last row has difficulty in reading the blackboard, which visual impairment is this student suffering from? Short Sightedness