It automatically adjusts its thickness to focus the light.
aqueous humor
ciliary body
The biconcave structure is the "lens, but his focuses the light, it does not adjust for the amount of light. The structure that adjusts for the amount of light entering the eye is the "iris"
The lens of the eye also called the crystalline lens.
The ciliary muscle is responsible for eye accommodation for near and far vision. It accomplishes this task by changing the shape of the lens.
Lens.
Lens
the corena
accommodation
The medical term for normal adjustment of the lens to bring an object into focus is "accommodation." This process involves the changing of the lens shape to focus on objects at different distances.
accommodation
The ability of the eye to adjust its focal length is known as accommodation. Since a nearby object (small dobject) is typically focused at a further distance (large dimage), the eye accommodates by assuming a lens shape that has a shorter focal length
the lens is held vertically in the eye's interior by suspensory ligaments or more specifically called the ciliary zonule, attached to the ciliary body. so suspensory ligaments is the answer(-:
Accommodation is the term that means the lens of the eye can change shape. When it changes shape, the eye can focus on items far away or close.