We see everything around us with the help of our eyes. Everything we see is an image. However, do we know how these images are created? Learn with the help of this animated learning module, about the various parts of the eyes and how each one helps in forming images that we see.
What is the Sense of Sight?
The sense of sight is the ability of the eyes to see objects around you. It is also the ability to perceive colour, brightness, depth. The sense of sight is considered to be one of the most complex of the five human senses. The eyeball is the organ that allows vision. It is an asymmetrical globe about the size of a ping pong ball.
Parts of the Eye
The main parts of the eye are
Cornea – It is a transparent dome that covers the coloured part of the eye, that allows it to focus on objects and regulate light passing through.
Iris – The coloured part of the eye. If a person has green eyes, it means he/she has a green iris.
Pupil – The black circle at the centre of the iris which lets light enter the eye.
Retina – The back part of the eyeball is called the retina. This is where the light should fall to create an image of what the eye sees.
Lens – The lens sits behind the iris and bends light to focus it to the retina.
Optical Nerve – This nerve sends the image to the brain which interprets the image and tells us what we are seeing.
For more such biology articles and videos, visit: http://mocomi.com/learn/science/biology/