Retina

back of the eye, a layer that contains cells sensitive to light is called the retina. Cones and rods are cells that sit on the retinas outer layer and absorb distinct bundles of energy. Cones help one perceive color and detail, while rods show black, lights, and whites. Colors make the distinguishing differences in objects when lighting is not enough for the brain. The use of shadows gives one the ability to see 3D.The retina takes that image and makes it appear upside-down and backwards. These lighted

Question 1.) When trying to gather data on a testable subject there are usually many different possible ways to approach it. When talking about the effects of exercise on a person’s mood this is also the case. An experiment could be conducted to see what your mood does with and without exercise. You would have a group of people all experiencing the same conditions. They would eat the same foods, sleep the same amount and have all the same factors in their daily routines. Then you would have half

Axons are sensitive and their respond depend on the local environment. When the tectum is removed, retinal axons grow toward the missing tissue, demonstrating that optic axons utilize these neighbourhood signals as opposed to a long-run diffusible attractant from the tectum as they grow along the optic tract (Taylor, 1990). In the event of a small piece of the optic tract neuroepithelium is turned 90° preceding the axons enter it, then they become misoriented when they enter the pivoted transplant

Matthew Beras Professor Kerr December 7, 2017 Color blindness Its affects and causes Have you ever had color distinguishing primary colors? Because if you have this may be a eye disease. Color blindness. This is a vision problem in which you have trouble distinguishing specific colors such as red, green, blue and yellow. Color blindness is a condition normally your born with, but it can be gained throughout life. It is literally when your unable to detect all of the primary colors to sum it all

(contralateral) via the optic tract. The LGN is responsible for sending messages to the cortex and receiving signals from the brain stem, the cortex, and other neurons in the thalamus and the LGN. The LGN also regulates neural information as it flows from the retina to the visual cortex and organizes that information. Each LGN has six layers, which are composed of magnocellular, parvocellular, and koniocellular cells. Magnocellular cells are primarily concerned with resolving motion and coarse outlines, they

to the eye. This paper is going to report on a physical injury from a detached retina. This paper will cover the cause, risk factors, complications, and a care plan with current treatments for the eye injuries. Etiology “The retina is the light-sensitive layer of tissue that lines the inside of the eye and sends visual messages through the optic nerve to the brain” (Facts about retinal detachment, 2016). As the retina detaches, it is removed from its normal location, causing pain and irritation

Tay Sachs disease is a life threatening disease that is passed down through families. Anyone can be a carrier of Tay Sachs, but is not common in the general population. The disease is most common in the Jewish population. 1 in every 27 members is a carrier of the disease. Tay Sachs disease is a rare inherited disorder that progressively destroys nerve cells (neurons) in the brain and spinal cord. The most common form of Tay Sachs disease becomes apparent in infancy. Infants with this disorder typically

can also be a part of development of cataracts like long term usage of steroidal medications. The cataracts forms on the lens of the eye. The lens focuses on light so that the retina can pick up an images. When there is a cataract, the light is unable to get through the lens which prevents a crisp image from reaching your retina. The result of the cataract, can cause your vision becomes blurred and distorted. As

and layers, these levels and layers then effect how our brains see things and our perception. Lying directly behind the pupil is a transparent lens that focuses incoming light on to the retina as an image. The process of accommodation happens when light travels into the eye, through the outer layer of the retina to the rods and cones. Once this happens the light starts a chemical change that would spark neutral signals, which then activates nearby bipolar cells. After the bipolar cells activate

transduction. Transduction is how light energy is turned into electrical signals that can be interpreted and understood by the brain. Transduction happens primarily in the retina, which is made up of several layers of cells. The first layer that light goes through is made up of rods and cones. Rods are on the outside of the retina and cones make up the center, called the fovea. Rods can only see black and white, while cones can only see color. This was really interesting to me because I did not know