Posts Tagged ‘technology’

Contact lenses and scientific advancement

Contact lenses are one of the most significant inventions of science and technology. People since ancient time are having diseases and physical problems. Going through the ancient documents and books one can find the medical advancement of those ages nearly thousand years back. Remarkably at that time there were no computers or automated machines yet the ancient people were capable enough to acquire the technology which enabled them to face the challenges of nature. It is the nature which gives us life and it is the nature which brings the disease as well. Even at that time there were epidemics, cancers and other fatal diseases. There was necessity to surgery when someone used to get injured in war or hunting. Damage to eyes was no exception to other vulnerability. They used to treat it in their own way.

But, as we know, time never stops and so does not scientific advancement, the apparently innocent yet very complicated problem was difficulty in vision. Difficulties in seeing the objects in near or far are the most common, apparently innocent, yet most trouble some problem faced by any one. It may be an old man, woman, young fellow of any age and sex who may get affected with such problems. Manufacturing and using of specs was the first step to resolve the problem for many years. But, with changing time everything changes, so does the society as well. In modern age people need to do a lot of work in shorter time and have to get involved in much kind of activities in different situation. So, what becomes important is keeping something put on to eye all times and doing almost all work actively. At the same time it is important to forget the thing you are using on your eyes. The risk of losing or breaking such view enhancer should also be less than before. So, after many years of tireless modification contact lenses were built. The contact lenses can be used by anyone, anywhere except at the time of bathing and sleeping.

So, with the change of components in manufacturing contact lenses, in 1999 a different material to manufacture durable lenses came to market. The name of the material was silicon hydrogels. It is a compound material of silicon. Remarkably, silicon comes from sand, now not only it is found in manufacturing contact lenses but also in manufacturing microchips which are used in circuitry of computers and other electronic equipments. This new material provides extremely high level of oxygen permeability.  It also provides comfort in using it regularly and during any kind of physical activity.

The contact lenses can make work easy for all those people who use specs regularly during their daily work. Contact lenses easily substitute the specs and provide relief from becoming extra- careful about dropping, losing or breaking the glass of specs. Contact lens has become popular among the people of any age group and so, now a days it has world wide market. In most part of the world contact lens are sold under the same roof where the specs are sold. If you need to learn more about the contact lens then please visit contactlensescompared.com.

To get rid of your eye glasses you need to have contact lenses and the best place you can go to buy contact lenses is none other than Contact Lense Compared.

Article Source:http://www.articlesbase.com/vision-articles/contact-lenses-and-scientific-advancement-1607998.html

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Tunnel of Vision now better defined with new technology by Neuroptics

The Neuroptics pupillometer is a state of the art device used to measure the size of the pupil in real life conditions.  We acquired this technology in relation to a new FDA study that is beginning soon at Dishler Laser Institute.  In learning about this device we are so impressed that we have decided to use it for all of our LASIK evaluations to measure the pupil of the eye prior to surgery.  This device uses infrared light to measure the pupil 39 times per second for two seconds and then averages these readings to give an average pupil size which is accurate to 0.1 mm with a digital readout.  The human pupil is never stationary and constantly is changing in size depending on lighting conditions.  Even when the light level is constant, there are pupil fluctuations known as hippus.  We are not so concerned with pupil size in bright light, but in dim light a large pupil can potentially cause issues if not considered prior to LASIK surgery.  We measure the pupil in a controlled dimly lit room with the patient focused on a distant object.  This is because near vision targets can also make the pupil contract, similar to the effects of  bright light, and thus give an artificially small reading of pupil size.

We have learned in LASIK that there is not a direct correlation between pupil size and night vision complaints.  There is also not a direct correlation between pupil size and the size of the treatment performed during LASIK or PRK.  That being said, there is some relationship between pupil size and the treatment plan which makes accurate measurement of the pupil important.  While many laser centers still “guesstimate” the pupil size, and others use the Colvard pupillometer, very few have this advanced technology.  What is so interesting is that real vision is related to the size of the pupil averaged over a few seconds, since the pupil is constantly in slight motion.  Only the Neuroptics device can accurately measure the real pupil size in such an accurate manner.  Another factor that confounds this measurement is called vertex distance.  Basically this means that deep set eyes can be artificially measured differently than prominent ones.  The Neuroptics device measures the true pupil size.  In fact the Neuroptics can measure the pupil in total darkness for the largest size estimation when needed.

While the average patient is not really interested in the details of this particular test, what should be apparent is that the Dishler Institute, is really that, an institute of vision technology.  More importantly we bring the latest in technology to our patients as we have for the last 25 years.  This is only one test of many using the most advanced technology which gives our team of professionals the information that we need to best evaluate your eyes and vision and help you to make a determination as to whether LASIK or PRK or an ICL or maybe no surgery is the best choice for your eyes.  There is no reason not to take us up on our offer for a complimentary consultation and have your pupils measured with the Neuroptics Pupillometer, along with many other noninvasive tests done to evaluate your unique eyes and their properties.

We begin with advanced knowledge and technology to evaluate our patients.  The Neuroptics device is one new step in the path down the tunnel of light that we call vision.

Dr. Dishler is the first doctor to perform LASIK in Colorado, the first doctor to offer blade free LASIK in Colorado, and is a consultant, lecturer, and inventor. He is involved with several FDA studies and answers questions related to laser vision correction online.

Article Source:http://www.articlesbase.com/vision-articles/tunnel-of-vision-now-better-defined-with-new-technology-by-neuroptics-1539523.html

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Consider the Allegretto Wave Laser for LASIK

When someone decides that they want LASIK, they rarely consider the type of laser that will be used to fix their vision. While it is true that there are many different lasers used by ophthalmologists to correct myopia or hyperopia, you may want to know a little about the one that will be used on your eyes, especially if you are concerned about some of the side effects on your night vision that you may have heard about. Halos and glare are extremely rare, but they have a bothersome effect on LASIK patients. One of the latest generation lasers that can solve these types of issues is called the Allegretto Wave excimer laser.

The Food and Drug Administration approved the Allegretto Wave laser in 2003 for use with LASIK surgery. Allegretto Wave uses PerfectPulse Technology. This technology basically means that the laser is calibrated for your individual eye and does not act as a blanket solution for all eyes. Think of your eye like a fingerprint: no one else has your exact eye. One of the problems with older lasers is that they may have acted as a one-size-fits-all solution. It is here where some of the problems with LASIK have occurred. With Allegretto Wave’s PerfectPulse Technology, the beam’s pulse hits your eye exactly where it should. Checkpoints are made even as the pulse works at 200 times per second. If an adjustment is needed, this can be done, if your eye moves out of the beam’s range, for example.

Allegretto Wave also uses something called wavefront-guided technology. This essentially creates a map of your eye. Because no two eyes are the same, the eye’s “cartography” is important at the microscopic level. Since the laser will be sculpting your cornea, it is necessary that a map be created so that the 200 pulses per second know where they’re going. When this is done, more corneal tissue is preserved.

One of the unique features about Allegretto Wave is that it is able to read a large optical zone. This is the zone of the pupil that is affected by night vision (the more light needed in the eye, the larger the pupil zone). Through reading and mapping the entire optical zone, the chances of halos and glare are nearly eliminated.

If you are in the New York City, Manhattan, or Long Island, New York area and would like to learn more about the Allegretto Wave laser, please visit the website of board certified ophthalmologist Dr. James Kelly.

Article Source:http://www.articlesbase.com/vision-articles/consider-the-allegretto-wave-laser-for-lasik-1523236.html

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Benefits of the Allegretto Wave Excimer Laser

Excimer lasers for use in LASIK surgery have come a long way. The way that technology continually advances gives some of them an edge over others. One of these, the Allegretto Wave excimer laser, helps to reduce the chance of halos and glares with night vision as it corrects myopia, hyperopia, and astigmatism. Many people may want to correct their vision with LASIK, but are nervous about the side effects they’ve heard about in the media. Two of these, halos and glare, affect night vision and can make driving difficult. When the Allegretto Wave was approved by the Food and Drug Agency in 2003, this was one of its listed benefits. There are several other advantages of this next generation laser.

Advantages of Allegretto Wave

Technology used in the office of the ophthalmologist today are some of the most up-to-date and cutting edge available. Not only can your vision be perfected, your night vision will not suffer any degradation. Patient satisfaction with Allegretto Wave has been close to 100%.

If you are in the New York City, Long Island, or Manhattan, New York area, and are interested in finding out how using the Allegretto Wave excimer laser can improve your LASIK outcome, please visit the website of Dr. James Kelly at the Kelly Laser Center today.

Article Source:http://www.articlesbase.com/vision-articles/benefits-of-the-allegretto-wave-excimer-laser-1523243.html

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You can also Wear Progressive Glasses

online prescription glasses were invented in 1950s. Having been developed for more than half a century, its performance acts better and better. Generally speaking, progressive glasses are mainly suitable for the elders. However, with the development of technology in progressive glasses, now it can also be used to prevent and control myopia on youngsters.

It is reported by Essilor International that, in France, eighty-four percent of the elders wear progressive glasses. But in United States, the rate is fairly low. Few elders have enjoyed the convenience brought by progressive glasses in US. It is probably due to the following two reasons.

Firstly, some elders think the price of the progressive glasses is so high that they can’t afford it. Generally speaking, the price of a pair of ordinary progressive glasses in the entity shops is four hundred US dollars or more. Most of the elders think that just a pair of glasses is not worth so much money. Is there any way to enjoy the convenience of wearing progressive glasses but also cost less money at the same time? It is suggested by some experts that they can buy one in some e-shops such as bigeyeoptical.com. In these e-shops, the price of the progressive glasses is generally less than one hundred dollars. Besides, most of the owners of the e-shops pledge that consumers could ask for exchanging or replacing a purchase at their pleasure within five days from the day they receive the metal eyeglass frames.

Secondly, the ophthalmology and prescription of the progressive glasses needs high and new technology, so lots of medium and small-sized glass shops can’t afford much investment in the technology. Therefore, right now, there are not many glass shops supplying the progressive glasses in the market.

According to a professional ophthalmologist, the progressive glasses are very suitable for the following two kinds of people.

First: people who are more than forty-five years old, and have need in watching objects constantly in near distance, medium distance and far distance with a long history of wearing glasses. The last point, a long history of wearing glasses is very important, for the long-time wearers have already been used to the image difference caused by glasses, while the new wearers feel uncomfortable even by wearing glasses with no strength, not to mention the progressive glasses.

Second: teenagers whose strength of myopia increases at the speed of more than one diopter per year. It is proved by scientific experiments that the degeneration of their eyesight could be controlled and the condition of their myopia could be improved after they wear the progressive glasses.

The professional opthalmologist also remind that it is better for the following three kinds of people not to wear the progressive glasses.

First: people whose refractive difference between two eyes is more than ±2 diopters and strength of astigmatism is more than ±2 diopters. The eyes of these people are in a special condition in which the refractive power of one eye differs from that of the other, so they aren’t able to put up with the prism effect caused by focusing of eyes.

Second: people who have need in enjoying a broad sight in medium and near distance. Therefore, drivers, library screen-watchers, accountants, etc. should not wear progressive glasses.

Third: people who are able to see objects in far distance clearly, never wear glasses before and hope to select a pair of 10 dollar frames that can be applied in watching objects in near, medium or far distance. The glasses they want are commonly called the progressive glasses with no strength on the up part but with the effect of presbyopia lenses on the down part. Briefly speaking, these kinds of people are particular about their glasses, so they can hardly select a suitable pair of progressive glasses.

Relate Useful Website:http://www.visioncarehome.com/how-to-select-kids-glasses.html

Firmoo’s Blog is the information source in area of vision care, including eyeglasses, sunglasses, contact lenses, sports protective eyewear, vision error and diseases, vision surgery, ageing and kid’s vision etc., solely sponsored by Firmoo.com, an emerging online optical store offering high quality eyewear at the lowest prices.Firmoo’s return and refund policy make any purchase risk-free.

Article Source:http://www.articlesbase.com/vision-articles/you-can-also-wear-progressive-glasses-1501543.html

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