Name the following :​
(i) Place of best vision in the retina of the eye

Q. What are rods and cones in the retina of an eye ? Why is our night vision relatively poor compared to the night vision of an owl ?

Q.

Name one defect of vision that cannot be corrected by any type of spectacle lens. Explain in brief that defect. In a myopic eye, the image of a distant object is formed in front of retina and not at the retina itself. Why does this defect arise? [3 MARKS]

Q.

With reference to the functioning of the eye, answer the questions that follow :

(a) What is meant by power of accommodation of the eye?

(b) What is the shape of the lens during (1) near vision (2) distant vision?

(c) Name the two structures in the eye responsible for bringing about the change in the shape of the lens.

(d) Name the cells of the retina and their respective pigments which get activated (1) in the dark and (2) in the light.

Q.

The following diagram represents a certain defect of vision of the human eye. Name the defect.