Visual Impairments
Glaucoma is a disease that causes visual impairment. In the United States it is estimated to affect 3 million Americans, with 120,000 becoming blind due to the condition. Elsewhere in the world where treatment is less available, glaucoma is ranks as one of the leading causes to blindness. Even if people with glaucoma do not become blind, vision can be impaired. I have personally seen the effects of the disease for my grandmother was afflicted with it. She had several surgical procedures with no success. She was declared legally blind.
Part A
Glaucoma is defined as a disease of the optic nerve, in which the nerve fibers are injured; usually abnormally increased intraocular pressure. The two primary forms of glaucoma are open-angle and closed-angle glaucoma. In open-angle glaucoma there are no apparent symptoms or signs until it has done irreversible damage. At first, people may notice visual problems only when light is dim. Sometime there is sensitivity to glare and problems differentiating between varying shades and brightness. In closed-angle glaucoma, the pressure inside the eyes increases. Intense pain in the eyebrow area and blurred vision develop usually in one eye and the person often feel like their eye will burst. The eye is red and the person will feel nausea or vomiting will occur. The condition can either be diagnosis by a physician or an eye examiner. A physician can use a tonometry which measures the pressure in the eye. They can use an ophthalmoscope to check the optic nerve. The causes of glaucoma includes the aging process, a deficiency in nitric oxide, genetic factors, nutritional deficiency, toxics, abnormalities in chemicals in the brain, and stress. Once the optic nerve has been damaged, no treatment or procedure can be performed to restore his or her vision. Early diagnosis helps individuals maintain their current vision. The treatments provided todays are drugs and surgery can lessen the severity of the condition only when diagnosis has been made early. Exercise, a healthy diet, and non-traditional treatment have also been known to lessen the condition. The aging process contribute to the pressure in open-angle glaucoma by decreasing the number of activity of the cells in the trabecular mesh, impairing their ability to drain the aqueous fluid effectively.
Saxena, Rohit, Diguijay Singh, and Praveen Vashist. “Glaucoma: An Emerging Peril.” Indian Journal of Community Medicine 38.3 (2013): 135-7: Proquest. Web. 7 Jan 2014.
Glaucoma is a disease of the eye and it is fluid pressure within the eye rises and if the eye is left untreated the patient might lose vision or maybe even blind. But this disease is generally affects both eyes but although one of their eyes may have more severe signs or symptoms then the other eye. When you have glaucoma there are small spaces in the front of the eye and they are called anterior chamber. There is clear liquid that flows in and out of the anterior chamber and the fluid nourishes and bathes nearby the tissues. And if the patient has glaucoma the fluid dose not drain like it should drain but the fluid drains out of the eye. And this may lead to fluid build up and pressure inside the rises of the eye. Unless the pressure is brought down and controlled and the optic nerves and some of the other parts of the eye might become damaged leading to ...
Vision loss from glaucoma is permanent but can be prevented with early detection and treatment. Since the symptoms of the disease are usually unnoticeable, regular eye examination are important especially for persons over the age of 35 and those in high risk group.
According to Baily and Hall, while visual impairment early in life is associated with inherited congenital disorders, abnormal fetal devepment, and problems associated with premature birth, most eye conditions are associated with aging. They claim that over 70% of the visually impaired population in the United States is over 65. Age related maculopathy, also called macular degeneration, or AMD, impairs the center of vision in older individuals. The macula is the region in the back of the retina that surrounds and includes the fovea (Goldstein 1999). It is important to understand that when this degeneration progresses enough, the condition constitutes blindness because the foveal area is what is used to focus on something. Most cases do not progress this far, but between five and 20% do. Allikments and Shroyer claim that 11 million people in the United States alone suffer some degree of this impairment, with 75% of those individuals being 75 or older. Seven percent of this older age group reportedly suffer advanced forms. Freidman reports the disease as most common in developed countries.
There are 3 main areas of difficulty which people who have autism and these can sometimes know as the “Triad of Impairments”. Social communication is difficult, as severe autism may never to develop any speech whilst those with Asperger syndrome may speak fluently. People who are on the autism spectrum have the ability to use their communication skills that are impaired. These difficulties are processing language and interpreting facial expressions, body language or tone of voice. Understanding figures of speech or metaphors. Struggle to follow long or complicated sentences, and only be able to follow one simple instruction at a time. Social interaction as a person with classic autism may appear withdrawn, aloof or uninterested in the people
Blindness is a disease that causes the eye to not see clearly. Cataracts, most common disease for blindness, is a very serious disease and can cause death (Hal, 13). Cataracts affects almost twenty million American people (Hal, 13). Dome of the most common causes that can cause blindness are Diabetes, smoking, drinking, and lack of nutrition (Medicine Net, web).
There are 285 million people that are visually impaired in the world. Of those people, 248 million have low vision and thirty- nine million are blind (WHO). The causes of blindness fall into two categories: natural causes and environmental causes. Cataracts, the clouding of the eye’s normally cleared lens (Landau 20), glaucoma (16), and macular degeneration (22) could all be put into the category of natural causes. Equally important, the environment can also have a huge impact on the condition of the eyes. Exposure to chemicals (30) and punctures in the eye (29) can cause a person to go blind. Next, symptoms of blindness may include tilting the head to the side to better focus on an object, holding an object unusually close (24), blurred vision that glasses cannot fix, and double vision (27). Other symptoms of blindness could be eye pressure or
Unlike other disorders an individual may have, there is no quick way and easy way to confirm or deny a learning disability. There is no x-ray, blood tests, easy and quick surveys to help educators determine whether a learning disability exists. Many of the problems with identifying and assisting children with learning disabilities are to have knowledge of the various learning disabilities and how they affect students. The lack of information available to parents and teachers causes the students to continue to struggle in school and diagnosis for any disabilities to be postponed even further in their schooling.
Fluid circulating inside the front portion of the eye is produced by a structure called the ciliary body, which is located behind the iris. This fluid moves through the opening of the pupil, passes into the space between the iris and the cornea, and drains out of the eye through a tissue called the angle. With glaucoma, the passing of fluid through the angle is either reduced or suddenly stops, and amounts of fluid inside the eye increase. This high fluid pressure hurts the nerve fibers and the eye's optic nerve and causes blind spots. It may lead to blindness in some cases.
It is a rare condition that affects 2 % of Americans. Signs of pathological myopia include: Bending or distortion of straight lines, altered color perception, reduced contrast sensitivity, and increasing gloss of central vision. It is a quick severe progression of myopia and loss of vision is the end result. There is an increased risk of retinal detachment and other degenerative changes in the back of the eye (bleeding from abnormal blood vessel growth). If any of these things occur the risk of cataracts could increase. Treatment calls for a combination of a drug and a laser procedure called photodynamic therapy. It is reported to be the seventh ranking cause of legal blindness in the United States of America the fourth ranking cause in Hong Kong and the second in parts of China and Japan this form of myopia frequently progresses in adult life, with small intermittent steps of elongation being observable at any age. The adult progression appears to be due to the stretching of the walls of the eye. Genetically weak elements of the scleral wall are prone to thinning and stretching. One of the major forces at work in this stretching process appears to be the normal intra-ocular pressure (Ward
Some diseases that affect the retina and posterior segment of the eye include diabetic retinopathy, retinal cancer (melanoma), glaucoma, age macular degeneration, and uveitis. Diabetic retinopathy and glaucoma fall under diabetic eye disease. Diabetic retinopathy is the most common diabetic eye disease. It is the damage to the blood vessels in the retina. Gl...
Disabilities. Many people don’t realize how lucky they are. They feel like they are hard done by and complain about all sorts of things, when they don’t realize the agonies that some people have to go through just to make it through the day. I will be comparing two different instances of disabilities. One from a book called The Miracle Worker, where a girl named Helen has had a disease that left her blind and deaf. And the other from the movie The piano, where the main character Sylvia, has been mute since she was 6 years old. I will talk about how the people around the one impaired were effected, how the person impaired was treated, and how they overcame their disability.
Robert, a 65 year-old male, has trouble reading fine detail, especially out of his central vision. He complains that his vision is blurred and that it is harder to see while operating a motor vehicle. In addition, sometimes objects appear wavy or crooked, which impairs his vision. His worst symptoms were that he occasionally lost the ability to distinguish between the features of familiar faces and he had a localized blind spot. Robert is not alone; many people suffer from symptoms related to loss and distortion of the visual field. He suffers from macular degeneration, the leading cause of decreased vision loss in the United States, especially for people over the age of 50 (Philippi, 2000).
“The world worries about disability more than disabled people do.” Many people with disabilities get labeled with stereotypes and people think they can’t do as much, but they can. You should help people with disabilities more because they have been through so much treatment their whole lives, many people have disabilities even if you can’t see them, and they have to face barriers everyday.