The regulation of light in the eye is accomplished through a combination of physical and chemical processes. The pupil of the eye is responsible for regulating the amount of light entering the eye. The pupil is a small opening in the centre of the iris, and it gets larger (dilates) or smaller (constricts) depending on …
Regulation of light in the eye – കണ്ണിലെ പ്രകാശത്തിന്റെ നിയന്ത്രണം Read More »
Aqueous humor is a clear, watery fluid that circulates in the front portion of the eye between the cornea and the lens. It helps to nourish and maintain the health of the cornea and lens and is also responsible for helping to maintain the intraocular pressure (IOP) within the eye. Aqueous humor is produced by …
Vitreous humor is the clear, gel-like substance that fills the space between the lens and the retina of the eye. It helps to maintain the shape of the eye and gives it a round shape. It also helps to focus light that enters the eye onto the retina. The vitreous humor is mostly composed of …
The optic nerve is a collection of nerve fibres that carries visual information from the retina to the brain. It is part of the visual system and can be thought of as an extension of the retina. The fibres in the optic nerve are axons of the ganglion cells in the retina. These axons are …
Blind spot is an area of the eye that is insensitive to light because it lacks the light-sensitive photoreceptor cells, called rods and cones, that are found in the rest of the retina. It is located at the point where the optic nerve leaves the eye. The blind spot is normally not noticeable because the …
Yellow spot is a patch of yellow pigmentation found on the ventral surface of the eye of some species of fish, including goldfish and koi. The yellow spot is thought to be a light-sensitive area that helps the fish detect food and predators.
The retina is a thin layer of tissue located at the back of the eye. It is made up of several layers of nerve cells and is responsible for sensing light and creating electrical signals that are sent to the brain, where they are interpreted as images. The retina also contains blood vessels and other …
The ciliary muscles are a ring of smooth muscles located around the circumference of the eye near the ciliary processes. They are responsible for controlling the shape of the lens, allowing it to become more or less curved and thus change the focus of the eye. The ciliary muscles contract and relax in response to …
The lens in the eye is a transparent, curved structure that helps to focus light onto the retina. It works in much the same way as a camera lens, allowing an image to be focused clearly onto the back of the eye. The lens is made up of proteins and water and is held in …
A pupil is the opening in the centre of the eye that allows light to enter the eye and reach the retina, which is the light-sensitive layer of tissue at the back of the eye. The size of the pupil changes depending on the amount of light entering the eye. When it is dark, the …