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Saturday, December 17, 2011
Friday, December 16, 2011
Thursday, April 14, 2011
Blindness

Blindness is the state of being sightless. The terms blind and blindness have been modified and include a wide range of visual impairment.
Causes of blindness
The leading causes of blindness include optical complications of diabetes, macular degeneration, and traumatic injuries. In third-world nations where about 85% of the world's blindness occurs, principal causes include infections, cataracts, glaucoma, injury, and inability to obtain any glasses.
Infectious causes include trachoma, onchocerciasis (river blindness), and leprosy. The most common infectious cause of blindness in developed nations is herpes simplex.
Symptoms and signs of blindness
A blind person may have no visible signs of any abnormalities. Support systems available to individuals and their psychological makeup will also modify the symptom of lack of sight.
Blindness diagnoses
Blindness is diagnosed by visual acuity testing in each eye individually and by measuring the visual field or peripheral vision. People may have blindness in one or both eyes (unilateral or bilateral). Poor vision that is sudden in onset differs in potential causes than blindness that is progressive or chronic. The cause of blindness is made by examination of all parts of the eye by an ophthalmologist.
Treatments for blindness
The treatment of blindness depends on the cause of blindness. In third-world nations where there are many people who have poor vision as a result of a refractive error, merely prescribing and giving glasses will alleviate the problem. Nutritional causes of blindness can be addressed by dietetic changes. There are hundreds of thousands of people who are blind from cataracts. In these patients, cataract surgery would, in most cases, restore their sight. Inflammatory and infectious causes of blindness can be treated with medication in the form of drops or pills.
Prevention from blindness
Between 80-90% of the blindness in the world is preventable through a combination of education and access to good medical care. Most traumatic causes of blindness can be prevented through instruction in eye protection. Nutritional causes of blindness are preventable through proper diet. Most cases of blindness from glaucoma are preventable through early detection and appropriate treatment. Visual impairment and blindness caused by infectious diseases have been greatly reduced through international public-health measures.
Monday, April 4, 2011
Global Warming

How Much More Will Earth Warm?
Scientists build climate models which are designed to simulate the responses and interactions of the oceans and atmosphere, and to account for changes to the land surface, both natural and human-induced. The models predict that as the world consumes ever more fossil fuel, greenhouse gas concentrations will continue to rise and Earth's average surface temperature will rise with them. Based on a range of plausible emission scenarios, average surface temperatures could raise between 2°C and 6°C by the end of the 21st century.
How Will Global Warming Change Earth?
Global warming will modifies rainfall patterns, amplifies coastal erosion, lengthens the growing season in some regions, melts ice caps and glaciers, and alters the ranges of some infectious diseases. Some of these changes are:
Changing Weather
Global warming will result in storms, floods, and droughts and hurricanes. With some exceptions, the tropics will likely receive less rain (orange) as the planet warms, while the Polar Regions will receive more precipitation (green).
Rising Sea Levels
Global warming will impact rising sea levels will erode coasts and cause frequent coastal flooding. Sea levels crept up about 20 cm during the twentieth century and predicted to go up 18-59 cm over the next century, though the increase could be greater if ice sheets in Greenland and Antarctica melt more quickly than predicted.
Impacting Ecosystems
Global warming is putting pressure on ecosystems, the plants and animals, both on land and in the ocean. Warmer temperatures may affect lifecycles of pollinators and plants to survive and reproduce, which would reduce food availability throughout the food chain. To survive the extreme temperatures, both marine and land-based plants and animals have started to migrate towards the poles. Those that cannot quickly migrate or adapt, face extinction. About 20-30% of plant and animal species will be at risk of extinction. if temperatures climb more than 1.5°-2.5°C.
Impacting People
As tropical temperature zones expand, the reach of some infectious diseases, such as malaria, will change. Rising sea levels will lead flooding and potential loss of property and life. Hotter summers and more frequent fires will lead to more cases of heat stroke and deaths. Intense droughts can lead to an increase in malnutrition. On a longer time scale, fresh water will become scarcer. The same small change in temperature, however, would reduce food production.
Niagara Falls

Sunday, April 3, 2011
Stress Management
- Major life changes
- Work stress
- Relationship difficulties
- Financial problems
- Being too busy
- Children and family
- Inability to accept uncertainty
- Pessimism
- Negative self-talk
- Unrealistic expectations
- Perfectionism
- Lack of assertiveness
- Pain of any kind
- Heart disease
- Digestive problems
- Sleep problems
- Depression
- Obesity
- Autoimmune diseases
- Skin conditions, such as eczema
Unhealthy ways of coping with stress
These ways may temporarily reduce stress, but cause more damage in long run
- Smoking
- Drinking too much
- Overeating or under eating
- Spending hours in front of the TV or computer Using pills or drug
- Sleeping too much
- Procrastinating
- Filling up every minute to avoid facing problems
- Taking out your stress on others
- Withdrawing from peers
Healthier ways to manage stress
- Express your feelings instead of bottling them up. If something or someone is bothering you, communicate your concerns in an open and respectful way.
- Manage your time better. Poor time management can cause a lot of stress. But if you plan ahead and make sure you don’t overextend yourself, you can alter the amount of stress you’re under.
- Learn to forgive. Accept the fact that we live in an imperfect world and that people make mistakes. Let go of anger and free yourself from negative energy by forgiving.
- Set relaxation time. Include rest and relaxation in your daily schedule. Don’t allow other obligations to infringe. This is your time to take a break from all responsibilities and recharge yourself.
- Exercise regularly. Physical activity plays a key role in reducing and preventing the effects of stress. Make time for at least 30 minutes of exercise, three times per week.
- Eat a healthy diet. Start your day right with breakfast, and keep your energy up and your mind clear with balanced, nutritious meals throughout the day.
- Get enough sleep. Adequate sleep fuels your mind, as well as your body. Feeling tired will increase your stress because it may cause you to think irrationally.
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10 facts about blindness and visual impairment by WHO
Fact 2
Fact 3
Fact 4
Fact 5
Fact 6
Fact 7
Fact 8
Fact 9
Fact 10
Monday, February 28, 2011
Sunday, January 30, 2011
Categories of Disability
List of all disability types and definitions
The following list contains all the disability categories referenced in the Workplace Accommodation Toolkit.List contains 41 items.
All Categories
Cognitive Impairment
Deaf-Blind
Dexterity Impairment (Arms/Hands/Fingers)
It is much harder to get RSI than it is to get rid of it. Prevention is key. Treatment can last up to a year or longer and may include surgery. There are assistive devices designed to aid persons with RSI work in a more natural position and put less strain on the body.
Elderly
Many of the symptoms characteristic of aging are covered in other categories, Problems may include hearing, vision, dexterity, mobility and cognitive. Sometimes there is a combination of several disabilities stemming from the aging process. Many products are cross-functional addressing several different disabilities. Therefore, an aging person may not require a specific adaptive device for every disability. This should be considered when choosing an aid.
Hearing Impairment
Learning Disability
It affects:
INPUT
- How information is taken in.
- Perception (How it is perceived)
- Auditorily (How well information is heard)
- Visually (How well information is seen)
- Tactually (How well information is input by touch)
INTEGRATION
- How new information is taken in, understood and linked to old information.
- Concept formation.
- How multiple ideas are combined.
OUTPUT
- How information that has been learned and assimpilated is shown to others.
- Written expression
- Organization of thoughts and understanding of Logical Progression.
- Oral expression (A speech or explanation of what has been learned)
- Organization of thoughts and understanding of Logical Progression.
- Demonstration (A project demonstrating what they have learned)
- Organization of thoughts and understanding of Logical Progression.
- inattention
- hyperactivity
- impulsivity
Hyperactivity: difficulty inhibiting behavior. These people are in constant motion. They may engage in excessive fiddling, leg swinging and squirming in their chair.
Impulsivity: difficulty controlling impulses. These people do not stop and think before they act. They say and do whatever comes into their mind without thinking about the consequences. They might say something inappropriate and regret it later, blurt out a response to question before a person is done speaking to them or have difficulty waiting for their turn in line.
The following are some common signs of Dyslexia:
- trouble expressing verbal language
- poor reading comprehension
- poor spelling
- difficulty reading — trouble identifying individual words
- trouble expressing thoughts in written form
- difficulty listening to or following directions — may hear words incorrectly
- confusion about directions in space and time, (e.g. left from right, up from down, months of the year)
- letter reversals (e.g. writing b for d or vice versa), trouble sequencing letters, (e.g. "left" for "felt").
- may see words as upside down, blurred or distorted
- difficulty with handwriting
- difficulty with mathematics — using mathematical symbols,
- sequencing steps to solve a mathematical problem
Mobility Impairment
Speech and Language Impairment
seewhen they mean
skior they may have trouble using other sounds like
lor
r. Listeners may have trouble understanding what someone with a speech disorder is trying to say. People with voice disorders may have trouble with the way their voices sound.
Visual Impairment
Legally blindindicates that a person has less than 20/200 vision in the better eye or a very limited field of vision (20 degrees at its widest point);
Totally blindpeople cannot see at all. This makes it impossible to view a computer monitor and renders the computer inaccessible without adaptive assistance and non-visual media.
Link for this Article http://www.apt.gc.ca/wat/wb12200E.asp?Lt=D