Unlike bifocal contact lenses, a monovision-treated lens has only one power. Since bifocal contact lenses have two focal points on a single lens, people may take a period of time to adjust to the power change during vision switch. The fitting technique monovision provides another effective solution to prescription eyes.

Using monovision, you can wear a contact lens for distance vision on your dominant eye and another lens for close vision on the other eye. With proper coordination, the two eyes perform well in seeing at all distances, creating acceptable and comfortable vision. Although monovision is rarely used, they fit most of the people without awareness of “distance eye” or “close eye”.

Two monovision variations are designed to suit personal vision demands. First type is mini-monovision. Some people may find that standard monovision can not provide clear distance vision. Mini-monovision adds a slight magnifying power to the close lens. People with mini-monovision can get a perfect vision if they spend much of their time in distance vision and only a little close vision. The other variation is modified monovision, which combines a single vision lens for the distance eye and a bifocal lens for the close eye. This type offer satisfying distance vision as well as acceptable close vision.

Monovision is sometimes a dilemma for some people, that it may bring neither perfect distance vision nor close vision. In addition, the two eyes may be not in perfect coordination so that depth perception is affected.

Monovision contact lenses’ fitting requires more skills and more time. The wearer’s vision dissatisfaction can be magnified even by a slight change in the lens power, which may also spend several days to adjust. In this consideration, monovision contact lenses fitting may be mostly charged twice the fee for a standard contacts fitting.

Monovision contact lenses can also be used for a test to refractive surgeries, such as LASIK, conductive keratoplasty and so on. These surgeries may realize monovision for your eyes. But a prior two-week test of wearing monovision contact lenses is necessary. You can ask your doctor for more information about the difference between monovision and bifocal lenses, and then choose the better one for your personal needs.

Article Source:http://vision.firmoo.com/contact-lenses/asymmetric-monovision-contact-lenses.html

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One of the most common eye problems that affect millions of people is dry eye, which has possible causes including allergies, refractive surgeries as well as other eye diseases. Medications such as eye drops and ointments are usually used to treat dry eye.

However, a study in 2006 showed that flaxseed oil can be as effective as the dry eye medication Doxycycline for dry eye treatment among patients after LASIK. And further studies indicated that flaxseed oil was also effective in dry eye prevention. Furthermore, flaxseed is associated with fewer side effects than Doxycycline.

The reason why flaxseed is effective in treating dry eye is that it contains high level of essential fatty acids, especially beneficial omega-3.

Liquid flaxseed oil is only one of the three forms of flaxseeds, all of which should be taken orally. Capsules containing flaxseed oil are more convenient but they require a higher dosage. And they are still more expensive. The third form is ground flaxseed, which requires prior grinding. These ground flaxseeds should also be mixed in a glass of water or milk.

Flaxseed oil is the earliest form and is relatively inexpensive. But it has a disadvantage that it must be kept in a refrigerator. Exposure to air makes flaxseed oil to oxidize quickly, so that you should always check the expiration date. In most cases, you can take a tablespoon or 14 grams of flaxseed oil per day. In capsule form, three to six capsules are ok.

Some medical experts recommend cold-pressed sources of flaxseed oil for best effects. Without heat, this type of oil is extracted from seeds during the cold-pressed process, bringing a higher quality. But cold-pressed flaxseed oil is more expensive than ordinary flaxseed oil.

Article Source:http://vision.firmoo.com/others/flaxseed-oil-for-dry-eye-treatment.html

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For people with low vision, there are various low vision aids such as eyeglass-mounted magnifiers, handheld magnifiers and stand-alone magnifiers. In addition to these common aids, partially sighted people can also take use of other means while doing computer work, such as word-processing, creating and using spreadsheets and browsing web pages. Special software enables computer users to enlarge the text size or just “listen” to texts.

Computer operating systems and Internet browsers also allow partially sighted computer users to increase the size of texts and web pages. Commonly used web browsers such as Internet Explorer, Firefox and Safari can enlarge web page texts by pressing the “+” key while holding down the “Ctrl” key. In opposite, “Ctrl” plus “-” can minify pages to normal size and even smaller sizes. Another more convenient way is to scroll your mouse up or down to change text sizes while also holding down the control key.

These common web browsers also provide menu operation to customers for size control. You can find the “Text Size” or “Make Text Larger” command within “View” menu bar at the top of your browser. If you want enlarged mouse pointers and other navigation items, large-print display software can help. Other solutions include screen magnifiers and larger size of LCD displays.

As mentioned before, certain software can read text aloud. This kind of “talking computers” first scans text from sources and then converts it to sounds. For people who have difficulty reading an entire screen, these special voice systems can read aloud both actual text and important navigation items.

Some people may have difficulty in tracing tiny mouse cursor, so that operating systems provide useful keyboard commands for mouse movements. For people accustomed to a mouse, some tips are useful. Ergonomic design is essential to all types of mouses, in case of any hand discomfort such as cramp. Most modern mouses are equipped with a wheel in the center for simple scrolling down and up. A newer version of mouse is wireless optical mouse.

The flicker of traditional cathode ray tube (CRT) monitors is common by abnormal. This problem is always caused by improper screen refresh rates. You should set this rate above 70 Hz. Liquid crystal display (LCD) screens won’t bring flicker problems.

Article Source:http://vision.firmoo.com/others/computer-based-low-vision-aids.html

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They came away with little more than pocket change, but the thieves who broke into Michelle Swainston’s car last June robbed of her of something even more precious.

They nabbed her eyeglasses.

“I couldn’t see,” recalled Swainston, who could not afford to replace them. Laid off from her job as an auto-parts inspector, she had recently learned she would not be called back to work.

With her income slashed by more than half, she and her husband had just enough left for the mortgage, car payment and necessities.

Then she learned an area eye practice was offering free eye exams to people hit hardest by tough economic times in Michigan.

She called Advanced Eyecare Professionals and signed up for one of its three annual Community Eyecare Days. An eye exam at the Hastings office revealed Swainston, 49, had glaucoma.

The practice provided corrective laser surgery and what Swainston called “the best pair of eyeglasses I’ve ever owned” at no charge.

“These people are so helpful,” she said. “If it wasn’t for them, I wouldn’t have glasses, and I probably would have lost my eyesight.”

Swainston is one of 300 people who have benefited from Community Eyecare Days. Advanced Eyecare Professionals sets aside three Saturdays per year to offer free eye exams and glasses, one day each at its offices in Hastings, Ionia and Lowell.

They are accepting patients for appointments at their next event, Oct. 10, in Lowell.

The eyecare days have been spearheaded by ophthalmic technician Joy Fountain, 25. Growing up poor meant she and her siblings had to be “very, very sick in order to see a doctor.” Her mother would put her own health issues on the back burner.

Fountain, a straight-A student at Godwin Heights High School, attended Grand Valley State University on a scholarship and says in touch with her mentor through the Big Brothers/Big Sisters program.

“This was kind of a personal thing for me,” Fountain said. “I received help through several organizations, and I (wanted) to give back.”

She has had the full backing of Dr. Michael Flohr, owner of the practice. Flohr has made four Lions International Mission Trips to Central America, providing medical care and cataract surgery to people there.

He said he wanted to help people close to home, as well.

“We have always felt we had a commitment to help people in our community,” he wrote in an e-mail. “And with the current economic situation, we felt there was an increased need for help.”

In 2008, the practice gave eye exams to 160 patients ranging in age from 2 to 81 at the community eyecare days.

Of those, 152 needed new glasses. Other medical diagnoses included glaucoma, cataracts, diabetes, retinopathy and macular degeneration.

So far this year, the practice has seen 40 patients at its Ionia community eyecare day and 64 in Hastings. Staff provided more than 100 pairs of glasses and more than $15,000 in services. Others who had recent prescriptions received glasses only.

The practice also offers information on state aid programs, such as Medicaid, and other health plans.

Flohr and other staff volunteer on the Saturdays eyecare clinics are scheduled.

Kelli Worth, who handles marketing and advertising for the practice, said they are happy to do it.

“It really means a lot to everybody who participates,” Worth said.

“They also receive a feeling of doing something for their fellow neighbor.”

Fountain recalls a woman who came in wearing her son’s taped-together glasses. Worse, his glasses were for a nearsighted person, and she was farsighted.

“She couldn’t believe she got new glasses,” Fountain said.

“One person who tells their story and says thanks and is in tears just makes the whole three months of planning worth it,” she added.

Fountain would like to see other practices — particularly dentists — adopt her idea.

“My hope is to take this a little bigger than Advanced Eyecare,” she said.

Worth agreed: “The impact could be huge. There is a lot of dental need out there,” she said.

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Looking to avoid an outbreak of the flu among local schoolchildren, the Stillwater Central School District is working with public health officials and has sent parents a letter urging them to play a leading role in keeping their kids healthy.

The letter from district Superintendent Dr. Stanley Maziejka focuses on the steps that can be taken to minimize exposure to the H1N1 influenza — commonly known as the swine flu — and other illnesses.

“The most important thing we can do is to heighten parents’ awareness and share the facts public health experts know about the flu,” explained Maziejka in a recent interview.

Topping the list of five recommendations for parents is making sure that children “wash their hands often with soap and water or an alcohol-based rub” to kill germs and limit the transmission of viruses.

“You can set a good example by doing this yourself,” Maziejka said in his letter.

Parents are also urged to discourage children from sharing “personal items” like unwashed utensils and drink boxes with other children. The early detection of flu-like symptoms is also an important way to minimize the spread of illness, the superintendent said.

In a change in policy spurred by concern about the possible spread of the flu this fall, children being sent home from school in the Stillwater district because of illness “will wear protective masks to reduce the risk of spreading the illness” while they are waiting for parents to pick them up. This change is in compliance with the recommendations of the federal Center for Disease Control (CDC), Maziejka said.

Public health officials have indicated that symptoms of the flu include a fever with a temperature in excess of 100 degrees Fahrenheit, a cough, a sore throat, a runny or stuffy nose, body aches, headache and feeling tired.

To avoid spread of a virus, both the CDC and the state Health Department recommend keeping a child home from school for at least 24 hours after there are no more signs of a fever.

The flu most often affects persons between the ages and 5 and 24.

Concern over the spread of the H1N1 influenza virus has been a major focus of public health officials since a global outbreak took place in the spring.

Starting in Mexico, the rapid spread of the deadly virus was unusual because flu outbreaks have historically been the most serious in the cooler fall weather.

The largest number of cases in the spring outbreak affected those between the ages of 5 and 24 meaning school age children may be particularly susceptible to the disease.

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Currently, Americans in all 50 states can buy contacts both from ECPs and other sources such as optical chains, warehouse clubs and online stores. This privilege originates from a 2004 legislation that patients are entitled to obtain a copy of contacts prescription from ECPs without extra cost, which was only available in certain states before that time. This law profoundly separated fitting and lenses buying. You will never be forced to buy contacts from ECPs after been fitted. Today, contacts prescriptions are just like ones of other medical products like medicines that may provide more information than eyeglasses prescriptions. With a prescription, customers can buy disposable lenses regularly.

An accurate prescription is needed for contacts. Poorly fitting contacts and lenses made of unsuitable materials may cause discomfort, inflammation, swelling, and most severely, permanent vision loss. Sharing contacts may also bring dangerous infections. In US, optometrists, ophthalmologists as well as opticians are entitled to fit contact lenses.

Subtle eye problems may have developed even you are still feeling good with your eyes and contacts. Some ophthalmologists have ever found eye problems during regular eye exams, so that you must update the prescription within a certain period, which is also listed by either federal law or state law. Another point worth mentioning is that you can change your contacts size, material or design if you are diagnosed with a lens-related problem.

Contacts prescriptions use standard terms, abbreviations and measurements, which look like secret codes yet easy for recognition. Besides regular items, your prescription may also tell the recommended replacement period or the expiry. By US law, the expiry normally is at least one year and in most of the cases it may be longer than this. However, you should always follow your ECP for final decision, rather than the products instructions.

article source:An introduction of contact lenses prescription

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During the past several years, Transitions has aired a huge amount of commercials and spent tens of millions on them. Ads from Transitions claim that its lenses can be clear indoor and dark outdoor. This is the major feature advocated by the firm. Some people are willing to accept it. People who are in and out constantly can actually benefit from these special lenses. In addition, Transitions pledges a refund to patients who are not satisfied with Transitions lenses.

However, another fact is that the market share occupied by Transitions has remained at about 20% for quite a few years, without any increase. Transitions has never gained 30% to 40% of market share. Some customers have realized something fishy from the Transitions’s claim of refund.

For those who do not move from inside to outside or vise versa constantly during daily lives, Transitions lenses are helpless. For example, some people just drive to work, sit inside an office most of a day and drive home in the afternoon. Those individuals can not gain any benefit from Transitions lenses’ features.

What’s more importantly, a pair of Transitions lenses costs additionally more than $90. For those who can not take use of the benefits, the additional fee is meaningless. They can simply save the $90 by buying Rx eyeglasses.

Currently, representatives of Transitions get low salary because the firm has less money to spend after the years’ vast advertisements. In addition, many patients are not aware of the features advocated by Transitions lenses. The company must realize why it can not gain more market share.

Article from:http://www.easevision.com/limitation-of-transitions-lenses.html

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Children always need basic visual skills for good learning, such as near vision, distance vision, binocular coordination, eye movement skills, focusing skills, peripheral skills and eye coordination. It is estimated that 5% of pre-schoolers and 25% of school-aged children suffer from various vision problems. The American Optometric Association recommends that children should receive comprehensive eye exams at six months of age, three years of age and six years of age. After they entering school, eye exams should be taken every two years for any vision problems and needs for eyewear. Early detection and treatment of vision problems are crucial for children.

Most of the children may receive their first eye exam from a family doctor or pediatrician. Once suspected problems are found, parents should take their children to professional ophthalmologist or optometrist for further examination with specific instruments. Items of children’s eye exams include vision testing, eyeglasses determination, eye alignment testing and probably, a parent education. Parents should fill in a case history form about their children after making an appointment with the doctor. The form may ask for children’s birth weight, full-term issue, pregnancy or delivery complications, current medications and present allergies. Parents should feel free to tell the doctor all of their children’s eye conditions, such as frequent eye rubbing, excessive blinks, eye contact failure, poor eye tracking skills, as well as previous ocular diagnosis and treatments, family eye problems history etc…

Infants at three or four months old should receive several eye tests to assess whether they have developed required focusing skills, color vision and depth perception. Pupil response tests can show that whether the children’s eye pupil opens and closes properly in the presence or absence of light. Children may also be tested that whether they can focus and follow moving objectives. Blank and stripe cards can be used to evaluate infants’ preferential looking skills.

Eye tests for pre-school children involve some non-verbal symbols. The first type is LEA symbols, including apples, houses, squares and circles. Retinoscopy is used to test the eye’s response to light, and random dot stereopis is used to test the two eyes’ relation. The assessment of amblyopia for children requires some skills since there is no detectable anatomic damage. Amblyopia can be corrected using eye patching, which may strengthen the weaker eye. Also called strabismus, misalignment eyes may be caused by disabled muscle control in the affected eye or eyes. Some other testing items including correct focusing, depth perception, distance gauge ability and color vision are also important. Furthermore, children’s eyelids and lid margins may be examined to find potential abnormal eyelash follicles, bumps, discharge and swelling. And cornea, iris and lens examinations may discover cloudiness or other irregularities.

Eye problems on children such as lazy eye must be detected and treated as early as possible, since good vision is critical for school performance.

Despite genetic tendendies, outdoor play may help children avoid  glassesHave you wondered if you can help your children avoid wearing glasses? Myopia is the most common reason for wearing glasses for activities that involve distance viewing; such as driving, watching TV, and going to the movies. Thirty percent of the population is afflicted with myopia, and old wives tales abound as to the causes, prevention, and the best treatments. Most recent studies dispel the myths and provide guidelines for myopia and the best course of action to set our kids on their way to seeing well throughout their lives.

Risk factors for myopia:
Myopia is, likely, caused by a combination of factors. Here are specific risk factors that have been associated with myopia.

Family history – Six in ten children whose parents are myopic develop the condition. The chance of myopia increases if both parents have myopia.

Asian ethnicity – A prevalence of myopia exists in urban settings, such as Hong Kong and Singapore. Because it is higher than rural communities, it suggests that there is also an environmental contribution to development of myopia.

Near work – Recent studies of a theory that dates back a century has proven a correlation between near work and myopia. The Sydney Myopia Study showed that close reading distance (<30 cm) and continuous reading (> 30 minutes) increased the risk of myopia in school children.

Not spending enough time outdoors –a recent study published in January 2009 issue of Optometry and Vision Science, found that in engaging in enough (at least 14 hours) of outdoor activity can help to counteract the heightened hereditary risk of having two myopic parents.

Eye disease – such as diabetes and cataracts, for example, can be associated with myopia.

Treatment of myopia:

Glasses – The most common method of correcting myopia is glasses. As soon as the disorder is diagnoses, the child needs to be placed in glasses.

Contact lenses – Typically during teenage years, contact lenses are introduced. Most myopes do well with soft contact lenses. Occasionally, rigid gas permeable lenses are used. Exceptional care needs to be applied to make sure the lenses are kept clean and not worn overnight.

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