It communities with the posterior chamber, located just behind it via the pupil, i.e., opening through the iris. It is 2.5mm deep in adults but varies in hypermetropes and myopes. Anterior Chamber: The boundaries of the anterior chamber are anteriorly the back of the cornea and posteriorly the anterior surface of the iris and part of the ciliary body.iris, cornea, and two aqueous humor-filled spaces, i.e., anterior and posterior chambers. An anterior segment consists of a crystalline lens hanging from the ciliary body by zonules and all structures in front of it, viz. Anterior segment: The segmentation inside the eye is based on the position of the lens.Segments and Chambers of Eyeball: Eyeball is divided into two segments, the anterior one and the posterior one. They helpĬ) Keep the eye moist, and the oil in it slows the evaporation.ĭifferent parameters of the eyeball are given below: These tears are rich in salts, lysozyme, and immunoglobulins. They protect the eyes from insects and dust particles. The eyelashes are hair-like outgrowth projecting from the eyelids.
They protect the eyes from dust, insects, etc., by their reflection action. Eyelids and lashes:Įyelids are delicate layers of tissue that cover the eye. These help to prevent sweat, dust, and other waste from falling over the eye and the head. These are arch-shaped ridges projecting from the frontal bone.
These are the parts that help in the safety and smooth functioning of the eye. The retinal chamber is filled with vitreous humor. The point at which the nerves from the retina converge is called the optic spot. The light received from the lens is converted into a nerve impulse and carried backward as the optic nerve into the brain for further processing. The cones are color sensitive and recognize the colors. The rods are light-sensitive and recognize the dark and bright light. It consists of photosensitive cells, namely the rods and cones. This retina is the only part of the eye that perceives the light and converts it into electrical energy.
This neural coat of the eye is an essential part of the eye. This is the innermost layer of the eye made of nerve cells. When it constricts, it becomes thicker and when it dilates, it becomes thin. It helps to focus the objects based on their distance and concentrate the refracted light onto the retina. The lens is a biconvex, transparent and elastic structure that can alter its shape. This iris separates the aqueous chamber into anterior and posterior chambers.
0 kommentar(er)
