Browsing "Vision Healthcare"
Sep 24, 2014 - Vision Healthcare    No Comments

Test Your English: Advice on Taking The TOEFL Examination

ToelfIn order to be accepted into many English language colleges, you will need to pass the Test of English as a Foreign Language (TOEFL). You may also need to take the TOEFL if you are working toward professional certification or if you are seeking a residential or work visa. The test measures the English language skills of a non-native person. Your score on the TOEFL provides evidence of your ability to communicate in English.

If you are planning to take the TOEFL, you should understand the structure of the test. This test is given as an internet-based test (iBT) or as a paper-based test (PBT). The format of the test varies based on the testing center and internet services. Select your test site first, and then get information on registration, test dates and formats for that specific location.

The TOEFL test has four sections: reading, listening, speaking and writing. All parts are taken consecutively on the same day with a break between sections. If you are taking the paper-based test, you must write a short essay before you are allowed to continue to the main sections of the test. For the reading test, you will read passages and answer about 50 questions. In the listening segment, you will listen to lectures and class discussions followed by questions. You should be able to identify improper English when you read or hear it during the test. For the speaking portion, you will give a verbal response on a topic. In the last section, you will be expected to write essays or short responses to questions.

You will need to prepare for your test before your test date. You can search for material on the internet and find many useful resources. You can also work with a service that provides TOEFL preparation like Prep-Zone.in. These organizations offer courses, practice tests, tutoring and other support to help you pass the test. You can find additional resources through your local college or university as well.

The TOEFL is the most prominent test available to prove your abilities to communicate in English. It is available in over 130 countries so that you can prepare and complete your test even if you are not living in an English-speaking country. The test is accepted by more than 9,000 institutions including universities, immigration departments and professional licensing organizations. If you are planning additional education or want a credential that shows your English skills, the TOEFL is an excellent step toward your goals.

 

Toelf infographic

 

Feb 25, 2014 - Health & Wellness, Vision Healthcare    Comments Off on Cataracts: General Information and Treatment

Cataracts: General Information and Treatment

As people age or experience trauma, they face many age- or injury- related conditions. One of the most commons of these conditions is cataract. Cataract is a term used to describe an ocular disease that results in the clouding and opaquing of the usually clear lens. In normal eyes, the transparent lens allows for light to easily enter the retina. Due to the nature of cataracts, suffers experience a partial or total loss of vision, depending on severity.

Unlike many other ocular diseases that are related to unique genetics, cataract is incredibly common among older people, regardless of other characteristics. In fact, it has been estimated that over half of all people over the age of 80 will suffer from cataracts to some degree. The rate of cataracts increases to nearly 100% for those who are 95 and older.

Luckily, cataracts are not contagious. This means that cataract cannot be spread from person to person or move from one eye to the other. However, it is common for people who have developed a cataract in one eye to also develop a cataract in the other eye at some point as well. Cataracts are also not known to cause pain, itchiness, or redness. Despite this lack of discomfort, many individuals with cataracts elect for surgical correction. Untreated cataracts may eventually result in complete blindness.

Age-related cataracts are thought to stem from the proteins that form the lens of the eye. Normally, these proteins are properly arranged which allows for the full transparency that accompanies good, clear vision. Over time, these chains of proteins begin to clump in atypical fashions. As the clumping continues, the transparency of the lens decreases and a cataract is formed. A fully opaque cataract is considered “matured” while cataracts of lesser degrees of severity are “immature”.

 

Cataract Infographic

Age is, of course, not the only cause of cataracts. Genetics can predispose people to secondary cataracts, regardless of age. Some genetic diseases that are linked to cataracts include: Down syndrome, myotonic dystrophy, Wilson’s disease, galactosemia, and many more. Cataracts can also be caused by congenital infections such as rubella, herpes’ simplex, toxoplasmosis, and syphilis, to name a few. Other illnesses such as diabetes, iritis, and uveitis are known causes of cataracts.

Physical trauma can also cause secondary cataracts. Blunt or penetrating injuries can lead to the formation of secondary cataracts at some point. Other non-age-related causes of cataracts include but are not limited to: surgeries or exposure to ionizing, infrared, or ultraviolet radiation.

If and when cataracts do develop, surgery is a recommended option in order to counter the effects of increasingly murky vision. One common type of surgery available for individuals suffering from cataracts is LASIK surgery. The LASER used in LASIK surgery helps to reshape the cornea and to diminish the presence of cataracts. There are many types of LASIK surgery available and it is recommended that those choosing this route should contact a medical professional to see what surgery options are most appropriate.

For more information on cataracts and on how LASIK surgery may be able to alleviate symptoms, please visit http://www.lasiksurgery.sg/cataract.php.

 

Feb 18, 2014 - Vision Healthcare    Comments Off on The Benefits of an ICCP System

The Benefits of an ICCP System

The ICCP (Impressed Current Cathodic Protection Systems) is designed to protect vessels from corrosion. Some hull coatings include some level of protection, but not all hull coatings do. This is why an ICCP system is necessary. Here’s how they work:

The control panel features several anodes mounted on the hull and reference cells. A powerful external current is necessary to suppress the natural electro-chemical activity that typically occurs on the hull’s surface. This is necessary to eliminate the formation of corrosion on the plates’ surfaces. Most people experience this problem when dissimilar metals are in the same vicinity. This may occur in welding or when other metals come in close proximity with propellers.

The voltage output is varied, and the systems will automate the current output. With this setup, the protection level will remain the same, while the seawater resistivity is altered. The seawater resistivity increases in a sacrificial anode system. This will decrease the anode output and decrease the amount of protection provided. The range will not be decreased in standard seawater with this type of protection.

 

iccp mgps

 

 

Important Features and Advantages of These Types of Systems

These systems will constantly monitor electrical potential at the seawater and hull interface. These systems are more effective and reliable than sacrificial anode systems. Anode systems provide an unknown level of protection that is also uncontrollable.

Experts recommend installing a C-Shield system to save on maintenance costs and also to reduce fuel costs. The system will help to protect the owner’s investment and also to ensure greater safety.

These systems can prevent coating damage. This will extend the length of time you can participate in dry-docking. No anode removals are required during the dry-docking season with these systems, but they are required with the sacrificial anode system. This reduces maintenance costs.

Cathodicme suggested ICCP anodes reduce structural loading because they are flush-mounted on the hull. This type of mounting also provides less hydrostatic and hydrodynamic resistance, which reduces the ship’s fuel consumption. Depending on the type of these system purchased, the systems will range from 25 amps to 400 amps.

The control panels in the systems will range from simple linear to advanced systems. Some of the features may include automatic data logging and remote display. In most instances, the display will meet the IP54 requirements. The protection will be almost maintenance-free.

These systems use a feedback control system, and it’s typically self-regulating using reference electrodes. The measured potential is compared with the non-corroding structure potential. The control unit will determine is the current feed should be maintained, decreased, and increased.

 

Purchase a System

If corrosion control is a problem, you should purchase this system. They’re highly effective and can protect your investment. Check with your system provider and find the best one for your situation and budget. Most people don’t regret their decision to purchase this device after they witness the results. If the hull coating is not enough, try a new system.

Dec 9, 2013 - Health & Wellness, Vision Healthcare    Comments Off on Learn More About Cataracts

Learn More About Cataracts

When a person gets diagnosed with cataracts, they don’t necessarily have to treat them instantly. Oftentimes, doctors will recommend that patients ease their symptoms by updating their prescription glasses. Wearing the proper glasses while always reading in good lighting can help to keep your eyes healthy.

Doctors give this recommendation because cataracts usually don’t bother the person who has them; usually, people don’t even know they have them until they are diagnosed at the doctor’s office. It is best to take a wait and see approach with cataracts; if you experience no symptoms, then it is pointless to treat them.

In extreme cases, cataract symptoms can prevent people from performing everyday activities; it’s in cases like this where it is wise to seek professional cataract treatment. When cataract symptoms get really bad, people may have a hard time focusing their eyes. If this is the case, a doctor may choose to surgically remove the cloudy lens from a patient’s eye. After a simple surgery, it is expected that the patient will regain their eyesight.

Doctors encourage their patients to take a wait and see stance on cataract surgery. They do this because cataracts aren’t harmful to the people who have them; usually, cataracts are just considered a nuisance. Waiting for cataract surgery does not put the patient in harm’s way; cataracts do not cause long-term damage when left untreated.

Waiting on surgery does not make the surgery more difficult for the doctor in the future. If your doctor notices that you are suffering from an additional eye problem like glaucoma or nerve damage, the surgery may not improve your vision at all.

If your doctor finds that you have macular degeneration or diabetic retinopathy, a cataract surgery will probably improve your vision. Patients that have cataracts in both eyes get the surgeries done separately. This time in between surgeries allows the patient to see how they feel after the procedure is performed; the doctor should give you at least two weeks time in between surgeries. If you notice problems during this time period, you and your doctor can figure out what steps to take next.

If a patient and a doctor finally decide that cataract surgery is the way to go, the cloudy lens in the eye needs to be replaced; it needs to be replaced because it does not properly focus light on the retina’s surface.

Before a surgery is performed, the doctor must take specific measurements of the patient’s eye. During this time, the doctor measures the size and shape of the eye and lens. The doctor will take these measurements a week or two weeks before the procedure is performed.

Two million cataract surgeries are performed in the United States yearly. The surgery is extremely safe and effective; waiting on the surgery does not make the procedure harder for your doctor. If a person doesn’t show symptoms, it is very unlikely that they need the surgery at all. The easiest way to treat cataracts is to make sure that you are always taking good care of your eyes.

 

Have you ever wonder? What to Do With Your Old Glasses After Lasik Surgery

Jul 17, 2012 - Health & Wellness, Vision Healthcare    Comments Off on Keeping Close Watch On Myopia or Sight-sightedness

Keeping Close Watch On Myopia or Sight-sightedness

You may have heard someone say that they are short sighted or near sighted. The medical term for this condition is called myopia. When a person has short-sightedness, basically they are able to view objects close to them clearly. However, objects from a distance appear blurry and out of focus. Individuals with high myopia can only see objects clearly when they are only inches away. Routine eye exam can determine whether or not a person is nearsighted. Luckily nearsightedness can be treated and in some cases controlled- so that an individual who is suffering with myopia can have the ability to see objects clearly both near and far.

Short-Sightedness Treatment

If you are at a movie and are having trouble seeing the screen clearly, or in class and having trouble seeing the chalkboard, chances are you my be suffering from myopia. Myopia can easily be treated with an eye doctor prescribing glasses or contact lenses. These eye instruments bend visual images that enter your eyes. This helps focus the images in the back of the eye in a way that helps you see objects far away more clearly.


 

Today some people who have been wearing glasses and contact lenses for years are opting to have laser surgery on their eyes so that they no longer have to wear eye instruments to help them see clearly. Laser surgery reshapes your cornea by removing some of your eye tissue. I know this may sound painful. However, people who have had the surgery reported that this is not so.

Myopia treatment has proven successful over the years. This is great news for anyone who mat be concerned about the long term health of their vision.

Short-Sightedness Control

If you do a lot of reading- whether for work or pleasure, be sure to closely monitor any possible symptoms of myopia that may be occurring or increasing. Some experts say that a lot of work that entails up close use of your vision can either cause or enhance myopia. High blood sugar levels can be anther factor that causes myopia. So a healthy diet can be very beneficial to your eyesight as well as other areas f your over all health.

Your vision is a key part of your existence. Be sure to monitor any symptoms of blurred vision. If it occur and persists, contact an eye doctor immediately for an appointment. The quicker you react to symptoms can greatly affect the long term health of your eyes. Perform an eye healthy checking at this eye care center (http://www.myopia.com.sg/) or read more about eye health: Myopia Information.

Eye exercises for Myopia

Jul 13, 2012 - Health & Wellness, Vision Healthcare    Comments Off on What You Need to Know About a LASIK Surgery Clinic

What You Need to Know About a LASIK Surgery Clinic

In the process of selection of a lasik surgery clinic, lots of factors need to be considered. The expertise and track record of the surgeon, technology and equipments used to make the surgery, associated costs and preoperative and postoperative services offered by the clinic are some of the vital points need to examine.

Without proper analysis of all these factors, the patient may fall in danger with his or her invaluable eyes. So, the question comes how to select the best LASIK surgery clinic? To select the best clinic you have to collect as much information as possible about the above mentioned factors from the every possible source. Referrals from the family eye doctor can be the best. Next to it, family and friends can give important information about the pros and cons of a surgeon and clinic. The patient can also get help from the discussion forum available in the internet. Usually, ex-LASIK patients write their experiences about LASIK, clinics and surgeons.

 

Jun 25, 2012 - Health & Wellness, Vision Healthcare    Comments Off on Why Choose Epilasik over Lasik?

Why Choose Epilasik over Lasik?

Are you planning to have eye surgery done? Has your eye doctor examined you and offered you a choice between epilasik and lasik? If you’re having trouble deciding which procedure to go for, you’ve come to the right place because here I will be discussing why you should go for an epilasik instead of a lasik procedure.

The two procedures are actually very similar to each other. Both are done on an outpatient basis, which means no need for hospital admission, and can be completed in a matter of minutes. If your doctor has offered you a choice between the two procedures, it only means that you are a good candidate for either of the procedures. You probably do not suffer from dry eye syndrome or have a thin cornea because if you do, your eye surgeon would most likely tell you that you have no other choice but epilasik because you are not a good candidate for lasik.

So for those who do have a choice between the two procedures, here are some of the reasons why epilasik is better than lasik. In lasik, the surgeon will create a flap in your cornea prior to using a laser to reshape it, while in epilasik, there is no corneal flap created. The surgeon creates an epithelial flap instead. This is why epilasik is sometimes referred to as “superficial lasik.” Because of that, with epilasik you may avoid some of the lasik side effects associated with the formation of a corneal flap. These include corneal abrasion (a scratch on your cornea), flap striae (wrinkles caused by slight shifting of the corneal flap), diffuse lamellar keratitis (inflammation between the corneal flap and corneal stroma), and flap dislodgment (risk increases if you are in a profession or engage in hobbies where you have a higher chance of getting hit in the eye). Those are just some of the lasik risks that you should be aware of before making your decision on which procedure to go for.

Watch the Epi-LASIK Philadelphia: Advanced Surface Ablation

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