Question

Write short notes on Retina.

Answer 1

Retina is the innermost layer. It contains three layers of cells – inner ganglion cells, middle bipolar cells, and outermost photoreceptor cells. The receptor cells present in the retina are of two types – rod cells and cone cells.

(i) Rod cells –The rods contain rhodopsin pigment (visual purple), which is highly sensitive to dim light. It is responsible for twilight vision.

(ii) Cone cells –The cones contain iodopsin pigment (visual violet) and are highly sensitive to high intensity light. They are responsible for daylight and colour visions.

Answer 2

Short note on Retina is given below -

In our eye, retina is the layer which is innermost.

This layer possesses 3 layers that are of neural cells. These are -

1. Ganglion cells.

2. Bipolar cells.

3. Photoreceptor cells.

Let's describe about the cells of photoreceptor that is very important.

Photoreceptor cells are of 2 kinds. These are -

Rods

Cones

Rods helps in providing scotopic vision. This means that this helps us to view objects at night or twilight.

Cones provides photopic vision to us. This means that cones helps us to view in the day.