bookmark_borderSunglass Side Shields

The most common UV damage that eye doctors see are melanomas on the eye lids, acute eye pain, cataracts, and degenerative changes to the eye. In fact, studies have found that people who don’t wear sunglasses, exposing their eyes to UV light for hours every day, are three times at risk of developing cataracts. Fortunately, wearing a hat with a brim or sunglasses when going out on sunny days can do a lot to help protect the eyes from UV radiation.

For those who want to protect their eyes even further, there are sunglasses that come with side shields, which block UV light. You’ve undoubtedly seen these shields on the heavy dark glasses worn by older people who already have cataracts and people who have just come from an eye appointment. But sunglass side shields available for anyone who wants to wear them, either as part of some sunglasses design or as add-ons that can be attached to your existing sunglasses.

For people who wear sunglasses while playing sports or engaging in other outdoor activities, side shields offer an additional level of protection from sand, debris and other material that could get into the eye, and many shields have vents so that the lenses of the sunglasses don;’t fog up.

When buying a pair of sunglass side shields, you get what you pay for. Or, rather, you get what you don’t pay for – inexpensive sunglasses are usually not made with optical-quality glass like prescription glasses, and can cause sight problems down the road from peering through cheap glass or plastic lenses. And you should look at what the lenses are made from – for complete UV protection, the lenses should be crafted from polycarbonate or from plastic with a dye that absorbs UV radiation.

Polycarbonate plastic absorbs all UV radiation, while prescription-quality glass or plastic lenses absorb approximately 85 percent of UV radiation. But even with lenses that absorb 100 percent of UV radiation, light still can get to the eye from the tops or sides of the sunglasses, which is why side shields are an excellent idea for anyone, no matter what your age or how often you go out in the sun.

bookmark_borderDifferent Types of Dyslexia

First off, let’s see if we can clear up some of the confusion and get a clearer perspective on what the word “dyslexia” really means.

It is important to understand that there are two different schools of thought, two different ways in which the word “dyslexia”itself is used. The two different meanings of dyslexia are:

  • In the pure academic sense the word “dyslexia” has a literal meaning based on the etymology of the word itself. From its parts, ‘Dys’ means wrong or problematic (for example, as in ‘dysfunctional’) and ‘lexia’, means pertaining to words and letters. So literally, ‘dys’-‘lexia’ refers to problems with words.

In this sense, anyone who has a problem with reading, for whatever reason, has dyslexia.

  • There is a wider use and application, used by parents of dyslexics and by dyslexic adults. In the applications sense, dyslexia refers to a range of symptoms that includes problems with reading, writing and spelling plus other problems such as hearing difficulty, poor memory and a lack of physical coordination.

And so, as you can see, the exact meaning of “dyslexia” depends on who is speaking and the context in which the term is being used.

Secondly, let’s look at the different types of dyslexia..

The first attempt to subdivide and describe the different types of dyslexia was made by Marshall and Newcombe in 1973. They set forth the ideas of ‘surface’, ‘phonological’ and ‘double-deficit’ dyslexia.

The symptoms of Surface Dyslexia relate to the mistakes made where the rules of English pronunciation are inconsistent. For example, “bowl” is read as though it rhymed with “howl”, and “pretty” might be read as though it rhymed with “jetty”.

Phonological Dyslexia is a failure to grasp the phonic nature of the English language. Individuals with it have great problems reading new or nonsense words because they do not and cannot grasp the links between the individual sounds or phonemes and letters on the page.

Double-Deficit Dyslexia is the term applied to the condition of individuals who have both Surface Dyslexia and Phonological Dyslexia.

Auditory Dyslexia and Visual Dyslexia both stem from the magnocellular theory of dyslexia. This theory holds that dyslexics have neurological weaknesses in the magnocellular cells of the thalamus area of the brain. This area is where rapid processing of visual and auditory information takes place.

Many studies have shown that dyslexics do have weaknesses in their visual and auditory processing, but not to the same degree. This means that there is a very close relationship and sometime confusion between these two types of dsylexia.

A result can be that a child with poor hearing skills but with average visual skills may be diagnosed as having Auditory Dyslexia, whereas one with poor visual skills but average hearing may be diagnosed as having Visual Dyslexia.

Then finally there is Orthographic Dyslexia. Orthography is the set of symbols or letters that make up a language. In English this is the 26 letters of the alphabet whilst in Japanese or Chinese it covers thousands of different symbols. And so Orthographic Dyslexia relates to problems in identifying and manipulating letters in reading, writing and spelling.

bookmark_borderBlurry Vision in One Eye

There are several causes of blurry vision. One of them is a need for eyeglasses. If a patient suffers from myopia or hyperopia, glasses may be needed. In nearsightedness and astigmatism, objects from a distance may appear blurry but nearby objects may be clear. The blurring that happens may be more acute at night or patients may experience seeing ghostly images or double vision. Usually, those in the mid-40s develop a need for reading glasses. Another cause of blurry vision could be cataract. Most people think cataracts only occur in older people, but it can also occur in younger people. Cataracts commonly occur in people who are over 50 years of age. Symptoms that accompany blurry vision include problems with seeing at night, glare problems and color problems. While this is a cause for concern, cataracts do not cause pain or the feeling that something is stuck in the eye. Other causes may be macular edema, macular degeneration, optic neuritis and diabetes.

Blurry vision in one eye can also be traced to flu. When you’re sick, your immune system is down so you are most susceptible to infections. If you happen to be coughing as well, you might have also burst a blood vessel at the back of your eye.

You should call your doctor if you experience the following symptoms: if you see flashes in your vision, if you get the sensation that a curtain is being lowered into the part of your vision and if you have become unusually sensitive to light. Go see your doctor too if you have a foreign object lodged in your eye, if your contact lenses become uncomfortable if your blurry vision occurs right after an accident. This blurry vision may signal that you have internal bleeding or you might have fractured the bone surrounding your eye. Your doctor might recommend that you undergo laser eye surgeries or procedures that can relieve you of the discomforts you are experiencing.

bookmark_borderMaking Your Eyeglasses Photochromatic

Building Blocks

The substances responsible for photochromatic property of a lens are microcrystalline silver halides (usually silver chloride). These substances embed into glass version of lenses to make them photochromatic. Photochromatic lens contains millions of silver halides crystals. When exposed to sunlight, UV rays transform the crystals into light-absorbing particles. As these particles absorb light, the lens darkens and the amount of light passing through the lens is reduced.

When the lenses are removed from sunlight and the stimulating UV radiation is no longer present, the crystals return to their original orientation and the lenses become clear.
Plastic lenses depends upon organic photochromatic molecules for their reversible darkening. The main reason these lenses darken in the sunlight and not in indoors is that indoor does not contain ultraviolet rays. The Photochromatic lenses come back to their original color due to thermal process. Because of this reason some lenses don’t work well in hot temperatures.

More on Photochromatic lenses.

The transition lenses are today most popular photochromatic lenses. Transition lenses are manufactured by transition optical. Transitions applies a thin layer of photochromatic particles in front of the surface of lenses instead of distributing light-sensitive particles throughout the lens material. The light sensitive material penetrate lens evenly and up to depth of 0.15 millimetres.

bookmark_borderVitamins Affect Macular Degeneration

Presently, macular degeration occurs in two forms, dry and wet. Dry macular degeration occurs when the light-sensitive cells slowly break down causing gradual blurring near the central area of the eye. Over time, a person suffering with dry ARMD may experience serious central vision bluriness. Wet ARDM occurs when abnormal blood vessel are generated underneath the macula, which tend to be fragile and very weak. Due the weakness of the vessels they may leak blood, causing the macula to rise and shift from its origin. This shift usually damages the macula, which is very problematic for clear vision. Many people that suffer with this condition notice an immediate change in vision. To them, many straight objects appear wavy in nature. According to most eye care professional, they find wet ARDM a more serious condition, due to its fast and strong effect upon the eyes.

The reason why macular degeneration occurs specifically occurs in unknown. It is linked to the aging process. Many suspect that there are genetic contributory factors that make certain people pre-disposed to the condition. Some experts believe that smoking and diets rich in saturated fat can further progress the disease. Certain studies have presented statistic data demonstrating that those that smoke are 3x more likely to develop ARDM. In another study, those that had high saturated fat diets were 70% more likely to develop this condition, compared to those with low-saturated diets.

Recent research and evidence have helped eye professional with knowledge on how to help those that suffer with ARDM. If you feel, based on this information you are experience ARDM related symptoms it is strongly advised to see your local opthalmalogist or optmetrist. They can help you clearly define, if and what type of ARDM you are suffering from. Currently, ARDM is irreversible based on the clinical data stated in modern medicine. One of the most important things a person with this condition, should do is stop or minimize its progression. Medically, there are a few options to curtail the progression of ARDM through laser and radiation therapy. Currently, there are a number of success stories with both options as each technique has certain advantages.

I would like to digress from the benefits of medicine or surgery and focus on alternative medical treatments. It has been commonly found that combinational therapy with both techniques is pretty effective. According to some experts, it has been observed that antioxidants are very helpful additive for those with ARDM. Vitamin A and Beta-Carotene are most common antioxidants that help those with this condition. Research has illustrated that nutritional supplementation can prevent ARMD or minimized its progression. Many physicians, suggest to look for vitamins that are specifically made for this condition. Research has illustrated that nutritional therapy can prevent ARMD or slow its progression once established.

bookmark_borderGlaucoma Evaluation and Treatment

Routine eye exams should always include a pressure check which is the basic Glaucoma test. The most accurate way of evaluating the intraocular pressure is with the Goldman Applanation method. That requires eye drops and the use of an applanator with a cobalt blue light. The most common method is the non-contact tonometer which is the ” air puff” test. It is easy and quick, but not as accurate as the applanation. If the pressure is close to or above 21 mm, then a closer look is indicated because there is an increased chance that there may be a problem.

The next part of the exam is to look at the optic nerve. Normal nerves should have a yellowish pinkish appearance and the central cup part should not be more then 30% of the overall optic nerve. If it is and there is a vertical elongation to the cup, then additional testing must be done. Next up would be a visual field test. This involves following a light and using ones’ peripheral vision to see other spots. This evaluates the neurological integrity of the nerve. If there are glaucomatous field and nerve changes then there will first be an increase in the natural blind spot followed by arcuate “scotomas” or blind areas surrounding the central vision. These are clear indications of a positive diagnosis of Glaucoma. Confirmation of the disease is made with a GDX, which is an instrument that actually maps out the optic nerve changes and spots areas that are in danger.

There are several types of Glaucoma, the most common type being Chronic Open Angle. There is also a Narrow Angle type which is most common in farsighted patients. Diseases like Diabetes can cause the disorder as well by increasing blood vessel growth into the angle that drains the fluid from the eye. That is most dangerous and is called Neovascular Glaucoma and follows Rubeosis which is blood vessel growth in the iris of the eye. Trauma can cause the disease by recessing the iris resulting in scar tissue. That is called Angle Recession Glaucoma. Finally, there is Pigmentary Glaucoma which results from pigment leaching out of the iris and blocking the drainage area. This has a very strong genetic component and is the most difficult to treat.

The key issue with Glaucoma evaluation is to know the signs of early disease and treating it appropriately. All too often the early signals are missed and damage to the nerve occurs. The increase in pressure results in a decrease in blood flow to the nerve resulting in death to the tissue. Thus, the new treatment methods focus on vascular sparing to keep the blood flowing to the nerve. As a practitioner, even questionable pressures or optic nerves should be tested further and we must not assume that things are normal. Proper follow up is a must and patient compliance must be carefully evaluated.

bookmark_borderPink Eye – Conjunctivitis

What causes Pink Eye – Conjunctivitis: Pink Eye is is usually caused by either bacteria or viruses. Numerous types of bacteria can cause Pink Eye (conjunctivitis) but the most common are Streptococcus pneumoniae, and Staphylococcus aureus. Viral conjunctivitis is common with several viral infections, most often with infections caused by adenoviruses or enteroviruses, and can occur during a cold or the flu. Parasites and fungal infections have been known to cause conjunctivitis, but this is in rare cases.

Allergic conjunctivitis occurs more frequently among children with allergies such as hay fever. Allergic conjunctivitis often occurs in both eyes at the same time. Irritant conjunctivitis can be caused by such chemicals as chlorine or air pollutants such as smoke and fumes. A blocked tear duct can cause Conjunctivitis to occur in babies younger than 4 weeks old , which can be treated by gentle massage between the eye and nasal area.

Symptoms Of Pink Eye – Conjunctivitis: Increased Watering of the eye(s) or discharge, Swollen eyelids, Eye Pain, Redness and itching in the eyes, Gritty or sand feeling in the eyes, sometimes there is also a sensitivity to light.

Treatment For Pink Eye – Conjunctivitis: Doctors don’t usually prescribe medication for Pink Eye, because it usually goes away on it’s own within a few days. You must take some precauctions though with family members since Pink Eye can very easily spread to others. Wash your hands often and and don’t touch or rub your eyes. Don’t share washcloths, towels or other linens with others, and wash items after each use. Don’t share cosmetics, eyedrops or other products that you apply on, in or near the eyes, and replace them with new items after you’re healed, to avoid re-infection.

bookmark_borderOakley Sunglasses

Greg LeMond the three-time winner of the Tour de France was the first to become interested in the new design. Later pros like Mark Allen, Lance Armstrong and Scott Tinley demanded the quality and protection offered by Eyeshades.

Decades later new technology implemented to make the sunglasses better and cohesiveness with art have resulted in 540 patents worldwide for Oakley sunglasses. Now more than 110 countries enjoy the wide array of Oakley products available today.

Even The exceptional Oakley polarized lens utilizes seven different technologies which put it at the top of its class. It’s various technologies such as High Definition Optics (HDO) lets you see clearer and sharper with the magnification of ordinary lenses. Unlike other more common lenses you will be able to see everything exactly where it is. Not only this but the polarized lenses block the glare cause by water, snow and other high light reflective surfaces, resulting in increased vision clarity and improved depth perception.

Oakley sunglasses also filter out 100% of all the harmful UV rays of the sun. The Plutonite which blocks the rays is built directly in the lenses instead of applied as a coating like other sunglasses. Also the unique hydrophobic coating helps keep the lens from building up moisture and utilizes an anti-smudge technology which repels oils and contaminants that can corrupt your vision during sports competition.

bookmark_borderEyesight Naturally With Vitamins And Herbs

It is important for everyone to find out how to improve their eyesight naturally in order to avoid the many vision problems that could affect you during your lifetime.

Another very important step to improve vision is proper eye care. It’s important not to sit very close to the television screen or stare at the computer for extended periods of time. Always take a break and rest your eyes to help prevent possible serious damage.

It is advised that everyone wear sunglasses during the summer and protective goggles when performing any task that might result in materials coming in contact with your eyes. Be sure to always wash your hands before touching or rubbing your eyes, and do your best to avoid excessive contact with your eyes.

It is possible to improve eyesight naturally by incorporating theraputic herbs, vitamins and minerals into your nutritional program. These natural nutrients can also help promote overall health, as they all contain many therapeutic compounds.

There are three theraputic herbs we will focus on in this article: Bilberry Extract, Aspalathus, and Mahonia Grape Extract. We will also discuss two vitamins important to eyesight: Vitamin C and Vitamin E. Finally, we’ll take a look at two important minerals: Zinc and Fish Oil.

Bilberry is a theraputic herb that contains anthocyanosides that may decrease the rate of macular degeneration and prevent the occurrence of other retinal conditions. Bilberry protects veins and arteries in the eye, and helps with night vision.

Aspalathus is a powerful herb native to South Africa. this herb, also know as rooibos contains antioxidants similar to bilberry and can promote eye health as well as improve immune function.

Mahonia Grape Extract protects the eyes from UV rays and sun damage, while at the same time it strengthens the capillaries in the retina. Mahonia can help slow eye aging and helps maintain overall eye health.

Vitamin E is a powerful antioxidant that has been shown to slow the onset of macular degeneration – the most common cause of loss of eyesight, and protect the retina.

Vitamin C is also an antioxidant and it works along side Vitamin E to protect tissues and improve eye health.

Zinc is an essential mineral required by all cells in the body. Zinc helps with the function of strengthening the cells of the eye.

Fish oil contains powerful compounds that can prevent macular degeneration and as well as other eye problems.

Please keep in mind that supplements are not likely to be helpful in serious and advanced eye disorders, but they can play a an important role in mild to moderate cases of visual decline that occurs normally with the aging process.

bookmark_borderGood News for Aging Eyes

Normally our two eyes work together, but we can learn to separate them, and use one eye for close-up vision and the other one for far vision.

It’s like a drummer, who learns to play one rhythm with his feet on the pedals, and a different rhythm, a cross-rhythm, with his sticks.

About 100 years ago, an experiment was done by a man who made some glasses which turned everything upside down. He wore these for a week or so and found that after 3 or 4 days, everything looked normal and he was able to walk around without any mishaps. When he took them off, everything looked upside down! So he had to re-learn to see normally.

Our human brains are remarkable for what they can learn. Most of us have a dominant eye. In monovision, this eye is adjusted to see far distances, and the other eye adjusted to see close-up. Our brain can learn in about 6 or 8 weeks to adjust.

Monovision can be done using:

  • Contact lenses
  • Refractory surgery such as LASIK (blended vision)
  • An implanted intraocular lens

Whichever way it’s done, the brain learns to see in this new way. There’s a compromise involved too, as for most people who have monovision, their visual clarity isn’t perfect at either close or far distances. But it’s workable, and for some people, especially those who live active lifestyles, it’s a good solution.

Your eye surgeon will discuss the monovision option with you to see if you’d be a good candidate. If certain things are central to your lifestyle, you’d probably not want to have monovision:

  • Any activities requiring very sharp distance vision
  • Any activities requiring precise close-up vision
  • A great deal of night driving