Iris- It controls the pupil and help the eye to see clearly.

Pupil- It controls the amount of light that is allowed to enter the eye.

Lens- It focuses the light

Retina- It converts the light into electrical signal

Optic Nerve- Transmits electrical impulses to your brain

Rods- It detects non colored light, and it only registers a grayscale of black and white

Cones- It allows us to see color under normal lighting conditions

Bipolar cells- It provides the main pathways from photoreceptors to ganglion

Horizontal Cells- It make adjustments in the signals to bipolar cells.

Amacrine Cells - It involves with integration of activity in bipolar

Photo pigment- the chain of event begins