The Eye is shaped like a ball. The tough white outer coat is called sclera and its surface is covered by a thin layer called the conjunctiva. The clear outer layer called the conjunctiva. The clear outer layer at the front of the eye is called the cornea which is covered by the tear film. Behind the cornea is the iris – the colored part of the eye – with the pupil forming a hole in its center. The Space between the Cornea and the lens is filled with a clear fluid, called aqueous humor, which maintains the pressure in the eye (the Intraocular Pressure).
The Pressure is determined by the balance between the fluid production in the eye and its drainage out of the eye. On the inside of the back of the eye is the retina, which is the light sensitive layer onto which an image of what is being seen is focused by the cornea and the lens working together.
The central area of the retina where the most detailed vision is to be found, known as the macula, has a very high density of cells, Further away from this central detailed vision area is the area of the retina which is more sensitive to dim light and which also provides our peripheral vision.
Immediately below the retina is the choroid, which is the layer of the eye that provides the blood supply to the cells of the retina and onto which the retina is attached. Light that has passed through the front of the eye and is focused onto the retina is finally converted into a series of complex electrical rods and cones. These signals pass along the optic nerve in the back of the brain, where the final image is processed.
Posted in: Glaucoma
- About Us
- Cashless services
- Patient Education
- Contact us