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Hidden Troubles Caused by Night Car Mirrors

November 12th, 2009 by Arthur First No comments »

As for many people, prismatic rear-view mirrors are their first choices for their cars. These mirrors are often employed when people move the cars from one side to another or turn back. Glares from cars behind can be greatly reduced by them. Especially, since xenon is used in the headlights, these glares become much stronger than ever before. Though drivers have used some other devices to reduce glares, there are still serious safety threats.

In dark places, people’s pupils tend to expand greatly receiving more light, so as to make sure that objects can be seen clearly. Based on this, as for people who are driving on highway, some bright headlights behind may cause serious problems to their eyes. If people have stayed in darkness for a long time, they need very long time to recover from that state, for their eye pigments are bleached during that time. Still, the aging process can also cause decline in eye function.

The first plate mirrors did not come into being till the 16th century. People can also get images of 1to1 ratio from these mirrors. When making these mirrors, mercury is plated in the back of the glass. As time goes by, the mirrors are made with other un-harmful reflective coatings.

Nowadays, if people want to produce reducing prismatic rear-view mirror, they will use a prism shaped glasses before the mirror. This has formed a triangle form, which is shaper at the bottom than the top. People can see objects behind very clearly through the glasses in day time. This is a greater innovation than bygone hand held mirrors. When it comes to the close of the day, the mirror will adjust itself automatically, so as to let least glare behind go through it. This can assure that the eyes of drivers can be protected to some extent. Still more, people are suggested to use anti-reflective glasses if they want to prevent their eyes from being injured by glares.

However, there is a demerit in this technology. People may find that there is a visual blind when they drive on crossroad. They are not sure whether there are cars behind them or not. Sometimes, they will make some wrong judgments. For example, they will always encounter many difficulties when parking.

All these matters prove that sometimes rear mirrors can cause great threats for traffic safety. If these mirrors can be appropriately used, they can help drivers a lot. In fact, the emergence of some accidents is related with them.

If some cars stop behind, or they stop too close, the front drivers can not see these cars through their mirrors. These phenomena are very common in daily lives. Sometimes, cars with too much dirty or mud can not be clearly viewed by other drivers. In a word, sometimes there is a blind spot even with nigh mirrors.

The best way for people is to flip the mirrors back automatically on any conditions. Such as, while parking, driving in any conditions, people can use this way. However, people should balance between glare recovery and vision decline. The new mirrors that can adjust themselves with the change of light are very popular now. Especially, rear view camera systems can help people to solve the foregoing problems.

The car windows should be cleaned. Furthermore, if people want to enjoy the clarity and safety of night driving, they should make sure that their eye glasses are upgraded. People are suggested to visit an eye doctor for such a related prescription.

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Posted in Safety Eyewear

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Best practice for choosing Anti-Ultraviolet Radiation Sunglasses

November 12th, 2009 by Jean Caster No comments »

Many people think that wearing sunglasses can make themselves look handsome, but ignoring their protective effect – a more important function. Sunglasses were first designed for navy pilots to block out the strong sunlight at high altitude. Although the overall design and composition of the materials are always improving and changing over these years, the main reason we wear glasses is still seeking protection for our eyes.

As you know, the cornea is the part that is most likely to be damaged by ultraviolet light, so all spectacles manufacturers find ways to prevent UV rays into the cornea, which makes materials of lenses very important. Glass can stop the UV radiation, making it an ideal material for eyeglasses in the earlier stage. So ground glass is chosen for lenses, processed on an optical grinder with the greatest efforts. Improperly-produced lenses will cause distortion, which makes you feel dizzy and painful in the head. In a word, picking up a pair of sunglass made of good lenses is your first choice for the protection of your eyes.

The second factor you need to consider is the color of the coating on glass lens. An early science report said that for pilots who were exposed to the strong sunlight at high altitude, stopping them from 85 percent of sunlight was the best. Therefore, you’d better choose the 85% UV-blocking sunglasses to protect your eyes.

To sum up, consumers should be aware of two things: first is how much the UV coated lenses can block the UV rays; and second, is the lens dark enough to filter out 85 percent of the natural light into the eyes. Only those who care about these two factors can find the ideal sunglasses that not only suit them best in appearance but also provide best in UV protection.

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Posted in Sunglasses

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Vision Development and Therapy for Preschoolers

November 11th, 2009 by David Wachler No comments »

Puerile time is a key period of children’s development, including intellectual, social and physical development. They learn much knowledge about the nature, science and human communications while they grow up rapidly physically. Parents will pay much attention at these aspects to provide their children a well-balanced growth condition. However, preschool visual development and vision therapy is often ignored, which can be critical in children’s study and school performance during their puerile period.

In general preschool development, there is a specific development points called milestones. These specific time frames are charted to see if the child has physical development problems or intellectual challenges. It is usually very useful and easy to find problems which can be solved in time after suitable therapy.

However, it is much harder to find the children’s vision problems by setting such milestones. What we do now to exam the visual system of children? Most of the parents, teachers or even optometrists just exam the child to see if they can see properly, for instance, can they see 20/20 line clearly? Optometrists may do more to exam if the children’s eye is straight. But, these exams are really not enough in judging the health condition of their visual system.

Experts in the children’s vision development and vision therapy have suggested a higher standard that may change a child’s whole life. It is found that kids with identifiable learning disabilities have vast majority to have problems of their visual system. It is a pity that almost all of the children can pass the Optometrists’ eye tests. In other words, passing the eye tests is just a base level, there is much more to learning about how to develop the children’s visual system by a series of vision therapy.

Vision therapy is researched to develop preschool vision skills of the children. These vision therapy include eye coordination and focus, eye movements at all directions, coding, sequencing, gross and fine motor, balance, visual memory, and so on. These therapies are not only used to develop the visual system but also have amazing effects on the development of learning skills such as reading, writing, and remember spelling words without magic pill or magic glasses. All these skills can be trained!

So don’t hesitate doing the right vision therapies, it can help developing your child’s learning ability as well as their vision system.

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Posted in Children's Vision

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What Do You Know About Trifocals?

November 10th, 2009 by Edward Turner No comments »

People over 40 mostly find their eyes lose their capacity to adjust and focus on different things. This is a common biological change. As body ages, our eyes age as well, resulting in presbyopia, a term derived from Latin with the meaning of ‘ageing eyes’. This is different from myopia and hyperopia which are caused by deficiency of eyes and can not be cured by corrective glasses, refractive surgery or contact lenses. People with presbyopia usually use trifocals.

Trifocals are glasses where the lenses have 3 regions to correct for distance, intermediate (arm’s length), and near vision. They most used by people with advanced presbyopia who have been prescribed 2 diopters or more of reading addition. Compared with bifocals, trifocals provide more clear vision to the wearer although, in some degree, they sound to be tougher to see through.

Those who have ever worn bifocal glasses may know that at the very first time when they wear them, they often feel hard to get used to bifocals. They frequently feel dizzy. The insertion of the intermediate addition of trifocals which steps between the distant and reading distance make things easier for a person to progress one step to another. The intermediate addition is normally half of the reading addition and half of the long addition. So for someone with a distance prescription of -4 diopters and a reading addition of +3 diopters, the reading portion of their trifocals would have a net power of -1, and the intermediate segment would be -2.5 diopters. Thus, those wearing trifocals obtain clearer vision and experience less strain on the eye than those wearing bifocals.

Therefore, we can see, based on the same principle, trifocals, only differing from bifocals in vision of divisions, are equipped with three additions rather than two. Trifocal is a type of glasses belong to multifocal glasses.

Just like bifocals, trifocals are also equipped with the semi-circular area with each the reading addition and distance addition. Meanwhile the mid-range of trifocals are equipped with a narrow band, for people seeing things that are not very far but further than the reading distance. If you frequently spend your time before a computer, trifocals will provide you with great comfort.

Trifocals offer the wearer the benefits of three corrective prescriptions without the need for three separate pairs of glasses. For those who want the benefit of trifocals without telltale lines, there are progressive lenses, which may also be called progressive addition lenses or PALs, progressive power lenses, graduated lenses and varifocal lenses. These terms may be used to describe ‘no-line’ bifocals as well.

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Posted in Bifocals & Progressive

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Laser Eye Procedures You Should Know

November 10th, 2009 by Paul Benjamin No comments »

Have you noticed that you can’t see the face three miles away clearly and cannot do everything when taking off your glasses? Sometimes, when you go for a party, none eyeglasses fit your clothes and it looks ugly on you. Maybe contact lens can deal with these problems, but you have to put them on in the morning and take them off at night. In addition, you can neither do exercise too hard nor have a small sleep duringf rest time. That embarrassing moment must bore you many times. In fact, you can have a laser eye operation to solve all the above troubles.

The laser eye operation helps to correct eye disorders like myopia, hyperopia, and astigmatism. Simple to say, the operation can be divided into two steps. First, make a thin flap in the corner to make sure the surgeon can see underneath clearly. Second, get rid of the redundant tissue which is under the corner. This step requires a well-designed laser, and it is how the operation’s name comes from. The consequence is that the cornea is well reshaped, so your sight can be back to normal.

The patients had better to know the procedure of the laser eye operation and the preparations before operations in case you are scared about it. In fact, it’s not complicated at all. When you know the details, you must be relaxed.

The preparation is quite simple. The surgeon will anesthetize the only eye with some drops, and then you will lose your feelings and fall asleep. The effect of drugs is not so strong that you may wake up during the operation, but it doesn’t matter.

Afterwards, you are put on your back on the operating table. Your eyes are kept open all the time with the help of a special device so that your eye lids will not be a barrier for the surgeon to cut away the flap on the cornea accurately.

The following step is the most important. First, a computer reads your eye sight problems. Second, you will be asked to stare at a certain object and the laser or a microkeratone gives off light down the flaps. A few seconds later, your cornea will be reshaped. At this time, you may feel some bad smell. Don’t be nervous. It comes from the burning eye’s tissue.

The operation lasts five minutes more or less. However, only one eye can be operated at a time. If you want to correct the other eye, you must wait for several times or do it the next week.

Even though you may feel comfort after operation, you still need someone to accompany with you to make sure you get home without accident.

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Posted in Lasik & Vision Surgery

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Causes of eye pain

November 9th, 2009 by William Krause No comments »

Eye pain is a feeling of ache in or around the eye, sometimes behind the eye. There are mainly two types of eye pain, ocular pain and orbital pain. People with eye pain may describe their eye disease as burning, dull, gritty, aching, or stabbing, according to different patients as each person may interpret pain differently.

Ocular pain is eye pain caused by infections, such as bacteria, fungi, virus, chemical or injury. These kinds of eye disease include conjunctivitis, corneal abrasions, comeal ulceratioins, chemical bums and flash burns, blepharitis and sty or chalaziion. When this kind of eye pain occurred, especially caused by chemical, such as acid or alkali, home eye treatment can be carried out, for example, flushing the eye with great amounts of lukewarm tap water or commercially prepared eyewash solution under to reduce the eye pain.

Orbital pain is a deep, dull ache behind or in the eye, and the eye pain is usually caused by diseases of the eye, for instance, glaucoma, iritis or optic neuritis. Other diseases may also cause eye pain involving sinusitis and migraines.

Besides eye pain in or around eye, the patient with these eye diseases may suffer partial or complete loss of vision, light sensitivity, double vision, a feeling of pain with movement of the eye in different directions, or severe headache associated with eye pain.

Eye pain is a common eye problem that leads the patients to visit eye doctors. Common treatments for eye pain including antibiotic eye drops, eye ointment, and pain medication. Eye surgery may also be carried out in emergency condition.

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Posted in Eye Diseases

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The Development of Children’s Vision

November 9th, 2009 by Charles Garrana No comments »

Children’s vision develops significantly fast in the first year of their lives.

When a child is born, they can see only black, white and grey. That is because newborns have only the mechanism of vision but not full ability to see every aspect of things. Infants usually prefer to see people’s faces first, and after that they will be interested in other objects. Make sure that the child has healthy eyes in the first 12 weeks of life which is a very important period of the development of vision. It is recommended that the child be check for the health condition of its eyes by paediatrician. From 8 weeks old to 4 months, infants begin to follow objects, moving their eyes or moving their head together in the same direction of their vision.

Between 4 and 6 months old, children’s visual acuity or sharpness has developed as their eye muscles begin to have the ability to coordinate the movements of their eyes. And what is more exciting, children can see in color by 4 months’ old. During this period, children also develop other skills, such as roll, push, move themselves. And you may find that they are interested in putting everything that they can reach into their mouths for exploration.

From 6 to 12 months, as children develop their ability of walking instead of crawling, their visual perceptual skills developed, and children begin to have the ability of judging distance. Besides, their eye-hand coordination also improves greatly during this half of year.

During the preschool years of children’s lives, eye problem such as myopia, hyperopia, astigmatism, poor coordination of eyes, turned eye, or poor eye-hand coordination may occurred. Parents should pay more attention to their child’s behavior which can be signs of a vision problem. For example, children blink their eyes frequently, sit close or squint their eyes whilst watching television, hold a book very close to the eyes, tilt head noticeably or cover or close one eye when reading, rub eyes frequently. As children may not have the ability of telling blurred vision or sore eyes, when parents notice these behaviors frequently, please contact a behavioral optometrist for help.

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Posted in Children's Vision

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How to match the eye glasses frames with wearers variations

November 8th, 2009 by Jean Caster No comments »

Normally people will consider face shape and skin color to choose the right eye glasses frames. In addition to these two basic factors, following tips may also be considered.

People with severe refractive powers better choose plastic eye glasses frames as its thick frame can cover the thicker edge of the high-degree lenses for a better look.

For people who exercise or sweat excessively, plastic eye glasses frames will be a good choice. This choice can reduce the frame erosion and skin irritation.

Those wearers with very high degrees of astigmatism, special shapes of eye glasses frames will be applied. For a prescription like +6.00/-4.00 * 180, eye glasses frames which are vertically narrow but bigger in height will be a good choice. For a prescription like +6.00/-4.00*90, we need to select eye glasses frames which are horizontally narrow but smaller in height. There is a special requirement for the height of rims for those bifocal lenses, as height for holding multi-focal lenses needs to be higher than single vision eye glasses frames.

For those who are used to taking off their eye glasses frames with one hand, a selection of eye glasses frames outfitted with spring hinge will be highly recommended. These spring-hinged eye glasses frames are more difficult to be changed in shape, so that the eye glasses frames will last to fit longer.

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Posted in Eyeglasses

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The brief introduction of Binyon Optical stores

November 8th, 2009 by Connie Robertson No comments »

Binyon, an optical store name under Eye Care Centers of America, Inc., is the leading optical retailer in Oregon and Southern Washington area. Binyons operates 14 stores in above regions providing diversified types of prescription eyeglasses, sunglasses, contact lenses and accessories. Binyon optical stores eyewear assortments are designed to meet all the needs of its prospective customers.

Most of the Binyons optical stores are arranged to be near an independent eye doctor, so that patients can easily have their eyes checked and then choose the frames and lenses in the next door Binyon store. Like the other optical stores of Eye Care Centers of America, Binyons also offers quick pick-up service within one hour. In order for patients to get the prescription eyeglasses in one hour, all the lenses cutting, grinding and fitting into frames are done in the full-service lab behind the Binyon store.

Binyons accepts most of the vision insurance plans to extend its service to the majority of vision plan beneficiaries. In addition to this, Binyon also offers 25% discount on frames and basic lenses to those holders of insurance plans which are not included by Binyons.

In Binyon optical stores, full satisfaction of every customer is guaranteed to fuel the faster growth of Binyon optical in the coming years.

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Posted in Retails Brands

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International Von zipper

November 7th, 2009 by Randa Fritch No comments »

Von Zipper is an international eyewear company that produces sunglasses, goggles, softgoods prescription glasses etc… Vonzipper sunglasses and goggles come with a style and attitude of their own. Von Zipper has a product development team, which brings out fresh and innovative styles every year. Von Zipper also keeps a riders team. The team has won 3-time world surf champions.

Von Zipper is truly international. The company now has opened branches all over the world. Vonzipper’s branches have been in North America, South America, Australia, Europe, South Africa, Japan and Korea, all of which have their respective official websites. The main Von Zipper website is Vonzipper.com. It has all the links to the company’s seven branches. For example, Von Zipper’s website for North America and South America is us.vonzipper.com, and au.vonzipper.com for Australia. Currently, Vonzipper in South Africa, Japan and Korea have not set up their own website, so that they use America’s. Vonzipper’s each website provides products in the region and shows prices in currency in the region.

Even though each branch may have different products that are available in its region, the classification of Von zipper products is the same. Von Zipper products are mainly categorized into four types: sunglasses, snow goggles, MX goggles and soft goods. For sunglasses, Vonzipper lists different types: new, girls, wired frames, polarized etc… For snow goggles, Von Zipper has models such as Bushwick, Feenom, Sizzll and so on. MX goggles have Bushwick MX and Sizzle MX styles. Vonzipper also produces a great number of soft goods, including men’s tops, men’s bottoms, ladies garments, ladies swim, headwear, belts and other accessories.

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Posted in Retails Brands

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