The main function of the crystalline lens of the human eye is as follows. - It is a double convex lens with more bulging on the posterior part.
It's made of transparent and flexible tissues.
It is held in position by a ring of muscles known as ciliary muscles, which help the eye lens alter the focal length of the eye lens to focus a clear image of an object in different places.
Changing the focal length of an eye lens is called the accommodation of the lens.
The eye lens always forms a real and inverted image on the retina.
This lens divides the eye into two chambers. The smaller of these two is present between the cornea and the lens, filled with a liquid called aqueous humor.
The bigger portion is filled with fluid called the vitreous humor.
This fluid helps balance the structure of the eyeball.