Advertisements
Advertisements
Question
Give the main function of the following:
Fovea centralis
Solution
Fovea centralis - It is a point at retina where more cone cells are concentrated and thus produces sharpest vision.
APPEARS IN
RELATED QUESTIONS
How does the eye regulate the amount of light that falls on the retina?
Explain the following:
Mechanism of generation of light-induced impulse in the retina.
Which. of the following has normal vision?
(a) Xc Xc
(b) Xc Y
(c) XC Xc
(d) Xc Yc
Draw a labelled sketch of the human eye.
Where is the image formed in a human eye?
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
How does the convex eye-lens differ from the ordinary convex lens made of glass?
What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
The term " accommodation" as applied to the eye, refers to its ability to:
(a) control the light intensity falling on the retina
(b) erect the inverted image formed on the retina
(c) vary the focal length of the lens
(d) vary the distance between the lens and retina
When is a person said to have developed cataract in his eye? How is the vision of a person having cataract restored?
Mention the characteristics of the image that falls on the retina of the eye.
Name the muscles of the eye responsible for the power of accommodation.
Define the following:
Yellow spot
Name the following:
The most sensitive region of the retina.
State the Function:
Choroid coat in the eye
Long answer question
Draw the neat labelled diagram of the Sectional view of the human eye.
Assertion: Blind spot is a small area of the retina which is insensitive to light where the optic nerve leaves the eye.
Reason: There are no rods or cones present at the junction of the optic nerve and retina in the eye.
A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power
A student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters written in his text book. Which of the following statements is correct?
Name the part of the eye which gives colour to the eyes.