A head louse is a small insect that looks an ant; the head louse grows in three stages, the eggs, the nymph (baby louse) and the adult called a head louse. A head louse only lives for about five to six weeks in total but in this time it can lay a couple of hundred eggs.
There are a few ways to treat an infestation but you have to be careful when using some of the available treatments because head lice are persistent little pests that can become resistant to treatments. If you find that lice are walking on your comb unharmed after a particular treatment then you know it is ineffective and you will need to try another form of treatment that doesnÃ¢â‚¬â„¢t have the same compounds.
By finding one treatment doesnÃ¢â‚¬â„¢t work and try another you need to make sure they carry different compounds because the lice have become resistant to the compound in the first treatment that would normally work against them.
There are four groups of treatment available, these are grouped by the compound they have in them to kill the lice. These groups are
Ã¢â‚¬Â¢ Pyrethrins Ã¢â‚¬Â¢ Synthetic Pyrethroids (permethrin and bioallethrin)
People who have a common vision problem such as nearsightedness (myopia) are finding a correction surgery that involves implantable lenses. Implantable lenses may be another choice for correcting your vision problems. An implant that resembles contact lenses are placed between the iris and the cornea, or just behind the iris.
This is an alternative to the LASIK surgery but LASIK uses light rays to remove tissue from the eye to change the shape; the implantable lenses are more like glasses or contact lenses. The difference is they correct your vision inside the eye. This procedure does not need tissue to be removed; they are added to the eye.
The implantable lens is similar to what is used in simple cataract surgery but the lens not replaced but placed inside the eye. Cataract surgery involves removing the lens surgically before another lens is placed in the eye.
If other surgical procedures are not an option a doctor may consider implantable lenses to correct eye problems such as thin corneas. Implants may also be used to supplement or refine other vision correction procedures.
Sometimes a person may have an eye that doesnÃ¢â‚¬â„¢t follow the other eye. This means vision is out of alignment and corrections need to be made to the extraocular muscles. These muscles are what move the eyeball in all directions. Eye muscle surgery is performed to strengthen, weaken, or reposition those tiny muscles to allow the eyeball to move with the other one.
How the Muscles Work
The extraocular muscles are attached to sclera, which is the outer protective layer covering the eyeball. They are found in different places and the other ends are attached to the eye socket in the skull. This is what allows the eyeballs to move up, down, and to both sides and any angle between. This allows the eyeball to Ã¢â‚¬Å“trackÃ¢â‚¬Â together.
These binocluars in development would allow soldiers to see 1-10 kilometers into the distance, day or night, and warn them almost instantly of potential threats. They include a neuromimetic software system that would use Electroencephalography (EEG) to scan the soldier’s brain, on the theory that certain areas of the brain can recognize patterns quicker than the conscious mind.
In the latest cyborg news, from the world of military technology (DARPA to be precise), comes this system, with the unweildy official name of “Cognitive Technology Threat Warning System”. To quote the announcement:
Since it was discovered in 1997, the bird flu has only infected a relatively low number of persons, statistics showing that approximately 250 documented cases were found up to this day. During this time period and by monitoring these cases, scientists were able to form an opinion on how the bird flu manifests itself and whether or not it has symptomatic differences to other forms of flu.
First of all, it should be noted that the bird flu shares a lot of the Ã¢â‚¬Å“common symptomsÃ¢â‚¬Â attributed to other flu viruses. This includes heavy muscle aching, throat soreness, coughing, eye irritation, chest pains, high fever, a general state of weakness and nausea and possibly vomiting.
The main difference pointed out by recent studies is that bird flu symptoms are a lot more concentrated in nature and they are more efficient in damaging the body. The speed at which they do so is also increased when compared to a normal case of flu. In addition, digestive disturbances, which are rarely visible in simple flu cases, are amplified with bird flu, diarrhea and constipation being common symptoms.
Many people suffer from headaches that are triggered by allergies. Allergy headaches are extremely painful, causing pressure in the sinus area, and most of the time, an allergy headache is not helped by over-the-counter headache medications, such as acetaminophen or ibuprofen.
Difference between an Allergy Headache and a Migraine
Many people have trouble telling the difference between an allergy headache and a migraine. First, if you get a headache after eating or drinking something, and the headache is accompanied by swelling, hives and breathing problems get to the hospital! This is a headache brought on by an allergy to food.
Many people who suffer from seasonal allergies have allergy headaches too. The best way to tell the difference between an allergy headache and a migraine is to look at the symptoms of a migraine. A migraine is in intense headache, often located in one particular place on the head. The migraine is usually accompanied by nausea, and sometimes even vomiting.
Couples who deal with menopause have some different challenges to tackle than from any other point in their lives together. It challenges each person in the relationship on an individual level, and it also challenges them as partners. It can be both a physical and an emotional battle for both partners.
For women, it is difficult to get the male partner in the relationship to understand the changes she faces in her body.
It can be equally as difficult to get him to empathize with those changes. Communication is the key to dealing with menopause for both halves of the relationship.
Here are a few tips to help smooth the way:
Exercise is important for good health at any age, but is really important around the menopause. Aim to get at least 30 minutes of exercise a day Ã¢â‚¬â€œ vacuuming and energetic housework counts towards your exercise time by the way!
An electronic retinal implant designed for the treatment of blindness due to Retinitis Pigmentosa, a type of inherited eye disease which affects the retina, is making news. Following up on our last post about brain implants and artificial eyes, another astonishing device is in development, this time aan inventive use of a miniature vido camera.
“Diseases that damage the retina are a leading cause of vision loss. “What happens is that the light sensing cells, rods and cones, are no longer there, and therefore when the light goes into the eye, the patient cannot see in these areas,” explains Mark Humayun, M.D., Professor of ophthalmology and biomedical engineering at the Doheny Eye Institute, part of the University of Southern California.”