Question

Structure which maintains the shape of the eyeball and the area of no vision.

Answer 1

The visual system includes the eyes. They give animals eyesight, the ability to receive and interpret visual information, and the ability to perform many photo response functions that are not dependent on vision. Light is detected by the eyes and converted into electrochemical impulses in the neurons.

Complete answer:
The cornea is the transparent, dome-shaped front part of the eye that focuses light into the eye. The anterior chamber is a fluid-filled region behind the cornea.
The iris, the coloured component of the eye, and the pupil, the dark hole in the middle, are located behind the anterior chamber. To control the amount of light reaching the back of the eye, muscles in the iris dilate or constrict the pupil. The lens is located directly behind the pupil. The lens directs light toward the retina at the back of the eye.
Vitreous humour is a jellyfish fluid with the name vitreous humour. Between the lens and the back of the eye is the vitreous cavity. The cavity is filled with vitreous humour, a jellylike material. The cornea and lens focus light into the eye, which travels through the vitreous and onto the retina, the light-sensitive tissue lining the back of the eye.
Aqueous humour is the name for the fluid. Aqueous humour is constantly produced by the eye. Aqueous humour drains from the eye in a region known as the drainage angle to maintain a consistent ocular pressure. The shape of the eyeball is maintained by aqueous humour. The back part (posterior segment) stretches from the lens's front surface to the retina, acting as no-vision zones.

Note: The aqueous humour bathes and nourishes the lens while also maintaining ocular pressure. Because the lens and cornea lack a blood supply, the aqueous humour serves as a substitute for blood in transporting nutrients to those structures.