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प्रश्न
Name the following:
Kind of retinal cells sensitive to dim light.
उत्तर
Rod cells
संबंधित प्रश्न
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads :
Left eye : +2.50 D
Right eye : +2.00 D
State whether these spectacle lenses will converge light rays or diverge light rays.
What is the range of vision of a normal human eye?
Fill in the following blank with suitable words:
When light is dim, the pupil becomes................
Draw a simple diagram of the human eye and label clearly the cornea, iris, pupil, ciliary muscles, eye-lens, retina, optic nerve and blind spot.
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
An object is moved closer to an eye. What changes must take place in the eye in order to keep the image in sharp focus?
Mention if the following statement is true (T) or false (F) Give reason.
Ciliary muscles regulate the size of the pupil
Given below is a set of five parts. Rewrite them in correct sequence.
Conjunctiva, retina, cornea, optic nerve, lens.
Define the following:
Power of accommodation
Choose the correct answer.
Colour is detected by ____________
Differentiate between:
Yellow spot and Blind spot.
In a myopic eye, the image of the object is formed
Boojho while waving his hand very fast in front of his eyes, observes that his fingers appear blurred. What could be the reason for it?
Name the following:
The fibres which collectively hold the lens in position.
The layer in the eye where sensory cells (rods and cones) are located ______.
Which of the following is responsible for the adjustment of the size of pupil?
Where is the following located?
Yellow spot
Write the main functional activity of the following structure.
Ciliary body and suspensory ligament
Name the following:
Three layers of the eye ball.
