Anatomy Of The Eye

By Author: Neo Retina
Total Articles: 3
Comment this article

Eye is the sense organ of sight. The function of the eye is to convert light into an electrical signal which is then transmitted to the brain through the optic nerve. In the brain this electrical signal is converted into vision. The parts of the eye through which the light passes is as follows

Cornea: It is the clear anterior most part of the eye. This part of the eye is coated with a tear film which is produced by the glands present in the lids.

Anterior chamber: This space present behind the cornea is filled with a fluid called aqueous. Aqueous is clear like water and is responsible for maintaining the pressure of the eye and for supplying nutrition to the surrounding structures.

Lens: This biconvex crystalline lens is responsible for focusing light on to the retina. The lens changes shape to see the objects at near and at far. As we age the lens becomes less flexible and is unable to accommodate for near (Presbyopia). This condition is corrected by reading glasses. Another change that occurs in the old age is the development of cataract when the ...
... lens becomes opaque. Surgery is required for this condition and the opaque lens is replaced by a clear artificial lens.

Vitreous: This is a jelly like fluid that fills the eye. It is attached to retina at certain locations. With age the vitreous becomes liquefied.

Retina: This is a neurosensitive tissue which is the innermost layer of the eye. It converts light signals into electrical signals that are carried to the brain. Center part of retina is called macula and is responsible for clear and detailed vision. Retina is composed of several layers each having a definite function.

Optic nerve: This takes the information from the retina as electrical signals and carries it to the brain where it is converted into visual signals. Optic nerve may be damaged in conditions such as glaucoma which may be associated with raised intraocular pressure.

Macula: is the most important area of the retina located centrally close to the optic nerve. It has the highest density of photoreceptors called cones which are responsible for fine central reading vision, colour vision and contrast sensitivity.

About Author

Neo Retina is one of the the best eye hospital in hyderabad which provides the best retina, Advanced vitreoretinal, hemorrhage, diabetic vitrectomies, macular holes and Epiretinal Membranes surgeries. It is the best eye care institute located in hyderabad For more details visit : http://www.neoretina.com/.