Question

what is the structure of eye​

Answer 1

Explanation:

An Inside Look at the Eye. The outer covering of the eyeball consists of a relatively tough, white layer called the sclera (or white of the eye). Near the front of the eye, in the area protected by the eyelids, the sclera is covered by a thin, transparent membrane (conjunctiva), which runs to the edge of the cornea

Answer 2

Structure of the human eye:

The human eye is roughly 2.3 cm in diameter and is almost a spherical ball filled with some fluid. The parts of the human eye are:

• Sclera: It is the outer covering, a protective tough white layer.
• Cornea: The front transparent part of the sclera is called cornea. Light enters the eye through cornea.
• Iris: It is a dark muscular tissue and ring-like structure behind the cornea. The color of iris indicates the color of the eye. The iris helps regulate exposure of light entering the eye by adjusting the size of the pupil.
• Pupil: It is a small dark opening in the iris. Its size is controlled by iris. Pupil controls the amount of light entering the eyes.
• Eye lens: Behind the pupil, natural crystalline lens of the eye is present. The eye lens is a convex lens. It changes its shape with the help of ciliary muscles to focus light on the retina (power of accommodation). It becomes thinner to focus on distant objects and thicker to focus on nearby objects.
• Retina: It is a light-sensitive layer that consists of numerous nerve cells. It converts images formed by the lens to electrical impulses. These electrical impulses are then transmitted to the brain via the optic nerve. The image of the object is formed on the retina.
• Optic nerve: It is located at the back of the eye. Optic nerves are a bundle of over one million nerve fibres that carry visual messages from the retina to the brain.
• Vitreous Chamber: The inner space of the eyeball called the transparent vitreous chamber consists of a gel-like substance. This substance maintains the right pressure in eye and maintains stability of the eyeball.