Optic nerve

The magic of vision is incredible. Through the small window we are able to see the whole world. Eye is one of the five senses what human possess and majority would agree that it is perhaps the most important one. Many of us would be intrigued by the composition of the eye and even more by his interconnection with brain. How the eye actually works, his structure and the function will help us in better understanding how visual light is converted into our perception. The challenge of the image…

Glaucoma is an eye disorder where there is pressure in the eyeball that can cause loss of vision. The pressure that is created is known as “intraocular pressure”. It mainly affects the optic nerve. If caught early enough, treatment can be done to prevent major vision loss, or for your vision to worsen. Glaucoma cannot only develop just from your drainage system malfunctioning. Babies can have an underdevelopment of the drainage system in their eye, which can be inherited, but is very rare. This…

Visual Prosthesis: Selling a Dream to Visually Impaired (A literature review of advancements in the field of Visual Prosthesis) Abstract Visual prosthesis is by far the best bet to restore vision in a patient suffering with visual loss. This paper provides a literature review of the various technological advancements made over time and how these advancements have proved noteworthy in fields of visual prosthesis. To develop a basic understanding about the visual prosthesis, the anatomy and…

Research has indicated that there are a number of areas affected by the presence of alcohol, all serving developmental purposes. For example, a study by Dörrie and colleagues5 has concluded that the presence of alcohol can lead to various somatic structural abnormalities in the cerebrum and cerebellum. Dörrie and colleagues goes on to say, “At the functional level, cognition, motor coordination, attention, language development, executive functions, memory, social perception and emotion…

hypertension and damage the optic nerve over time. The flow of aqueous humour can be disrupted either by a partial or full block of its drainage canal or an excess production of the fluid, and the chronic increase in intraocular pressure (IOP) leads to a gradually progressive loss of the visual field and a slow degeneration of the optic nerve (Boyd, 2015). Glaucoma is known to cause widespread loss of retinal ganglion cells (RGCs) over time. As pressure on the optic nerve increases, RGCs are…

Devic’s disease is a chronic illness of nerve tissue, also known as inflammation of the optic nerve, and inflammation of the spinal cord. This is an uncommon disease. This disease is most common for loss of vision or pain in the eyes, blurred vision. There are 2 different types of this disease. The first is a classical type where one or both optic nerves are attacked of a short period of time, but then no recurrence. The second is a series of attacks over and over again but separated by periods…

analyzes the activity of a single fiber in the optic nerve of the frog. This study was done on frogs because of the uniformity of the frog’s retina, the normal lack of eye and head movements, and relative simplicity of the connection of the frog’s eyes to the brain. The study’s initial argument was that the nervous apparatus in the eye itself is dedicated to detecting certain patterns of light and their changes. Upon studying the fibers in the optic nerve, the investigators found that there are…

Therapeutic Cloning Imagine a day when the blind could see, with an optic nerve transplant, that day could be today using therapeutic cloning. Cloning for therapeutic purposes (also called research cloning and somatic cell nuclear transfer (SCNT) is a type of cloning with the goal of harvesting embryonic stem cells to grow tissues and other biological products with therapeutic value (Nicholson 2001). According to the article “How to Make a Stem Cell”, an embryo, by day five, contains…

into Central Nervous System (CNS) and Peripheral Nervous System (PNS). Central nervous system controls all important nerves inside the body enable the body to do its daily tasks. Peripheral nervous system is the system that control on the outside the brain and spinal cord. Both systems are requiring in the body for different functions. The central nervous system consists of the nerves in brain and spinal cord. The brain is responsible for organize and coordinate the information. Consciously and…

Plain radiography is quick, easiest, inexpensive, and universally available in any hospital emergency center. It still consider as the first diagnostic modality at many facilities, especially those that are not trauma centers. Plain radiograph put out the foundation of day-to-day imaging. They may on their own be enough to provide a diagnosis, or they may need to be completed by other modalities, such as computed tomography (CT). [10][13] Plain radiograph are of limited value in isolated…