Advertisements
Advertisements
Question
The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the
(a) fovea
(b) iris
(c) blind spot
(d) optic chaisma
Solution
Blind spot
Blind spot is the part where the optic nerve passes out of the retina. Photoreceptors are absent from this region
APPEARS IN
RELATED QUESTIONS
Write short notes on the following: Retina
Describe the anatomy of the human eye.
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Are these lenses thinner at the middle or at the edges?
What kind of lens is present in the human eye?
Name the part of the eye:
on which the image is formed.
How is the amount of light entering the eye controlled?
Name the cells on the retina of an eye which are sensitive to (i) bright light (ii) dim light (iii) sensation of colour.
How does the eye change in order to focus on near or distant objects?
(a) The lens moves in or out
(b) The retina moves in or out
(c) The lens becomes thicker or thinner
(d) The pupil gets larger or smaller
How much is our field of view:
with one eye open?
Out of animals of prey and predators, which have their eyes:
at the front of their head?
Having two eyes gives a person:
(a) deeper field of view
(b) coloured field of view
(c) rear field of view
(d) wider field of view
Choose the Odd One Out:
For a normal human eye the near point is at _______.
Complete the paragraph by choosing the right options given below.
(minimum, near point, 25 cm, farthest, farthest distance, far point)
The _______ distance of an object from a normal eye, at which it is clearly visible without stress on the eye, is called the minimum distance of distinct vision. The position of the object at this distance is called the _______ of the eye, for a normal human eye, the near point is at _______. The _______ distance of an object from a human eye, at which it is clearly visible without stress on the eye is called _______ of distinct vision. The position of the object at this distance is called the _______ of the eye.
Draw the struture of human eye and label its parts.
The pigmented circular area seen in front of the eye:
Given below is a diagram depicting a defect of the human eye. Answer the questions that follow:
- Give the scientific term for the defect.
- Mention one possible reason for the defect.
- What type of lens can be used to correct the defect?
Which one of the following statements is NOT correct?
Write the main functional activity of the following structure.
Choroid
