Blindness

Same as other sited people. Reading, writing, playing sports, (like beep baseball, which is an adapted version of baseball), swimming, listening to music, running track, playing videogames (we cann them audiogames-they're loads of fun!), using the computer with the help of a screen reader...anything a sited person can do a blind person can do.

It could be inherited by the parents, that would be very likely, If the parents don't have color blindness, its not very likely.

Depending on what caused their blindness and how much damage was caused, yes. Injuries such as detached retinas and conditions like cataracts can cause blindness, but are sometimes reversible through surgery. Diseases like glaucoma can also cause blindness, but be treated with some medications.

There are many different kinds and treatments vary

Night blindness is a rare disease, which affects about less than 200,000 people in the United States of America. It is a unique vision loss disease, which has many causes. This article will talk about night blindness treatment, symptoms and its causes.

What is Night Blindness?

Night blindness, also known as Nyctalopia is an inability to see clearly during night or in poor light. It is a disease which makes it difficult for the affected person to move around or drive around in the evening and night, as the vision either becomes unclear or simply impaired. It is a serious type of vision loss, that may be acquired or present from birth. Night blindness itself is a symptom of a much serious underlying medical problem.

Symptoms of Night Blindness

The way to identify a disease is through its symptoms. Some diseases have unique symptoms, which make it easy to spot and identify them. Some have ambiguous symptoms, which make it difficult to identify them. Night blindness is an eye problem which is not hard to spot, due to its unique symptoms. Here are some of the night blindness symptoms observed in affected patients:

As mentioned before, a major symptom is poor or blurred vision, in low lit areas or during and after evening time. One more symptom is prolonged vision loss after exposure to bright light.

The night blindness phases may be transient or may be getting gradually prolonged.

Persistent dry eyes is another symptom of this disease.

Night Blindness Treatment Methods According to Causes

Now that we know the symptoms of night blindness, let us see the reasons behind this vision crippling condition, that renders a person temporarily blind. Night blindness, like the tip of an iceberg, can be a sign of a much more dangerous underlying medical condition. The causes are varied and therefore, night blindness treatment also differs accordingly. Here I list the various causes of night blindness, along with the related treatment methods.

Night Blindness Cause #1: Myopia

Myopia, that is nearsightedness can be one cause of night blindness. Nearsightedness is caused by the elongation of the eyeballs, which makes it difficult to see things at a distance, due to the focus mismatch on the retina. This makes distant objects appear blurred and cause vision impairment in low lit areas.

Myopic Night Blindness Treatment

Myopic night blindness might be cured by the use of corrective glasses or lenses. In some cases, refractive surgery might be required.

Night Blindness Cause #2: Glaucoma Medications

Glaucoma is a disease which causes pressure build up on the eyes, eventually causing blindness as it affects the optic nerve. Glaucoma medications, can cause constriction of the pupils in the eyes, which may lead to night blindness. Pupils are the apertures of our eye lenses and their constriction reduces the amount of light that can be taken in, which reduces visibility, causing night blindness.

Glaucoma Medication Induced Night Blindness Treatment

The switching of glaucoma medicines may help in treating night blindness of this type.

Night Blindness Cause #3: Cataracts

Cataract is one problem which can cause night blindness. Cataract involves the progressive clouding of the eye lens, making it opaque and impairing vision.

Cataract Induced Night Blindness Treatment

Cataract induced night blindness may be treated by cataract surgeries, which can completely cure the problem.

Night Blindness Cause #4: Retinitis Pigmentosa

Retinitis Pigmentosa is a genetic disease, whose onset is declared by the condition of night blindness. As the disease progresses, the victim loses vision all together.

Retinitis Pigmentosa Induced Night Blindness Treatment

This condition is not completely curable yet but the rate of progression of this disease can be reduced by intake of vitamin A supplements and surgeries. Complete cure has not yet been found. Though future developments like retinal transplants may help in curing this problem completely.

Night Blindness Cause #5: Vitamin A Deficiency

Vitamin A deficiency is one of the prime causes of night blindness.

Vitamin A Deficiency Induced Night Blindness Treatment

The treatment for this type of night blindness is a regular intake of vitamin A. Progressive intake of vitamin A rich foods and supplements can cure this condition. Read more on

Vitamin A Deficiency Symptoms

Food Sources of Vitamin A

Night Blindness Cause #6: Diabetes

Night blindness can be a result of excessively high blood glucose levels, caused by a diabetic condition. Vision loss is a major symptom of severe diabetes.

Diabetes Induced Night Blindness Treatment

Early detection of diabetic condition and treatment methods like insulin injections, can reduce the severity of diabetes. This will reduce the possibility of further deterioration of vision. The treatment involves use of eyeglasses and in severe cases, some surgery might be required.

There are many more causes of night blindness but they are rare. One other rare genetic problem leading to night blindness is X-linked congenital stationary night blindness, which is an incurable condition.

As one can see, night blindness treatment is possible in most cases, except the genetic disorders. The probability of guaranteed cure is more with early diagnosis of the condition.

Hope I helped

Sources: medical websites

A person who is blind or visually impaired will often utilize what is called a "long white cane." These can be purchased through various vendors or obtained through state rehabilitation services. They are trained in a method called Orientation and Mobility where an instructor spends one on one time with the individual. Training with the long white cane includes everything from navigating in the home, to crossing a busy lighted intersection.

The height of the long white cane can be measured, depending on the philosophy of the organization, between the sternum and the forehead. Long white canes were historically introduced with the Veterans' Administration for soldiers coming back from the war with reduced or no vision. The were originally made from wood and had a crooked handle modeling from traditional support canes used by the elderly. Now canes are produced in aluminum, fiberglass and graphite. They are more resistant and user friendly in addition to being very light weight.

converging property of concave lens.

In myopia or short sight, light rays come to a focus in front of retina . Concave lens diverges light rays before they fall on the cornea; then they are converged by cornea and then by human lens to come to a focus on the retina. Now the image is seen clearly which was blurred / out of focus when seen without glasses.

You can't literally. You can't really explain what anything literally looks like to a blind person. They have no seeable conception of up and down, left and right, white and black, road and side-walk, long and short, etc.

Notice how I said literally. They can still hear and feel and smell. For the example of a road. You can make them feel water, and smell it, and even taste it. You can tell them from those what water is. You can also make them feel the concrete powder and the texture, make them smell it, and I recommend not making them taste it. You tell them you mix rocks, water, and concrete powder together to get a road. You make them feel the road, listen to what happens on the road, and guide them the length of the road. This will show them a rough seeable idea of the road.

The same thing can be said for color. Give the color a smell, something to feel, or even a taste, and describe it from that to them.

Another difficult way of doing it is telling them that they see nothing. They see the color black, and tell them to go lighter from this point of darkness to describe color becoming lighter.

( it is just a matter of concept ) for a blind man to describe and recognize and store some info in his memory, he would use his other senses like touch, taste, smelling and hearing

There is a possibility of curing night blindness with fish liver oil. This is mainly due to the fact that fish liver oil is rich in vitamin A.

yes some types of blindness can be recovered.

it depends on what type of blindness it is.

Sniff sniff or a friend... although it will probably still smell some when they have wiped sufficiently

Yes. If you damage the optical part of the brain, it is possible to go blind, even if the eyes are perfectly healthy.

Think of it this way, you could have a good webcam plugged into your PC, but if the PC is damaged (such as if the USB controller is bad), it might not be able to get the image. So even if the camera is good, it won't be of no use if it is attached to a damaged computer that cannot make use of it. Thus it is with vision. You can have healthy eyes but have brain damage that makes the brain unable to make use of what the eyes are sending to it.

You could die.

If the attacker hits hard enough, that spot in your nose, called the "bridge", will break. The cartilage gets forced into the brain.

NO.

Because it was so long ago that Saint Lucy lived there are no recodes of when she was born. We think she may have lived during the time period of 283 AD

Yes, but depending on yoru state, you may be subject to some special requirements such as having an extra mirror or similar.

Yes. A person is color blind if all his or her X chromosomes have the defective gene. A man have one X chromosome, and a woman has two. Thus:

If only the father is color blind

- The probability that the son is color blind is 0%

- The probability that the daughter is color blind is 0%

- The probability that the daughter is a bearer of the defective gene is 100%

If the mother is a bearer of the defective gene, but is not color blind, and the father is not color blind

- The probability that the son is color blind is 50%

- The probability that the daughter is color blind is 0%

- The probability that the daughter is a bearer of the defective gene is 50%

If the mother is a bearer of the defective gene but not color blind, and the father is color blind

- The probability that the son is color blind is 50%

- The probability that the daughter is color blind is 50%

- The probability that the daughter is a bearer of the defective gene is 100%

If the mother is color blind and the father is not

- The probability that the son is color blind is 100%

- The probability that the daughter is color blind is 0%

- The probability that the daughter is a bearer of the defective gene is 100%

If both parents are color blind

- The probability that the child, regardless of gender, is color blind is 100%

no!

Predator Blind makes you virtually invisible to waterfowl. You can use it on dry land, in muddy conditions, or in the water to give you a secure place to take aim at approaching birds. The Blind is made of tough, durable 100% polyethylene virtually indestructible body.

80 % 80 %

just look at some peoples eyes, you'll find out :)

Ryan has terrible vision.

There are many people who will do a critical analysis of blindness in male. One could say that it is genetic for example.