In the blind spot where the optic nerves leave the eye,

In uncorrected myopia,the image is formed:

Select the correct option:
$(1)$ There are no photoreceptor cells slightly above the posterior pole of the eyeball,hence it is called the blind spot.
$(2)$ Rod cells contain a purple-red protein called rhodopsin.

In vision,photons are converted into

What is the primary function of the ciliary muscles in the human eye?

During the night,when light intensity is low,light is detected by .....