Posts Tagged ‘myopia hyperopia’
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
- Wavefront-guided technology – This technology is not only found with the Allegretto Wave excimer laser, but is extremely important in LASIK surgery. Wavefront-guided technology creates a map at the microscopic level for your custom LASIK vision correction. This helps to reduce and eliminate any aberrations that might add to the risk of night vision-harming side effects like glare or halos.
- PerfectPulse Technology – Extremely reliable eye tracking and speed are used with PerfectPulse Technology. If your eye moves out of the range of the beam, it will stop and wait for your eye to return to its proper location. The controlled pulse assures the clearest vision possible.
- Speed – Moving at 200 times per second, the pulse of the beam knows exactly where to go at each step. Due to the speed, LASIK surgery with Allegretto Wave takes as long as pouring a cup of coffee. This also helps to reduce post-operative complications.
- Cross Line Projector – A red cross line lets your ophthalmologist know exactly what the alignment of the eye is and where the beam will pulse. This allows for an extra layer of security in the successful outcome of your LASIK surgery with 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
Read More...
Lasik eye surgery is used to certain visual ailments such as myopia, hyperopia and astigmatism. It aims to make better visual sight through permanently reshaping the cornea. It is a procedure done with the use of laser by ophthalmologists. Roughly six million Americans have gone through Lasik although it never guarantees 20/20 vision. Its long term safety is still unknown. But according to the report by the Ophthalmology Societies, around 95% of their patients are pleased with their new vision.
There is a list of compiled complications of Lasik surgery.
- It causes dryness of the eye. Experiencing dry eye is the most frequent complication related to Lasik. Even The US Food and Drug Administration warns about permanently experiencing dry eyes.
- It results to visual quality loss. Some Lasik patients were reported to experience trouble seeing details in dim lights. At times, some even experience visual distortions.
- After Lasik, the cornea isn’t capable of complete healing. It is reported to weaken one’s cornea because of damaging collagen bands which provide protection to the eye.
- Long term consequences are associated with Lasik surgery. Lasik patients are prone to cataracts. As such, patients are more exposed to undergoing repeat cataract surgeries.
- It isn’t advisable for patients to undergo bilateral simultaneous Lasik surgery. The surgery being performed on the same day puts the patients at risk of vision loss in both eyes.
- After Lasik, there are more serious complications which may arise. There were several after-Lasik complications reported such as inflammation resulting in corneal haze, flap dislocation and retinal detachment.
- It doesn’t completely remove the need for glasses. Still, Lasik does not ensure getting rid of reading eyeglasses by the time patients reach the age of 40. As the effectiveness of Lasik decreases each year, Lasik patients are more likely to use eyeglasses again.
- Until now, the real result of Lasik complications is not fully determined. It was recorded that FDA allowed Lasik manufacturers not to disclose the results of clinical trials.
- After Lasik, treatment options are limited. Lasik treatments are permanent and unalterable.
- There are still safer options instead of Lasik. Eyeglasses and contact lens are still the safest methods to improve vision.
At present, the Food and Drug Administration is conducting a study which aims to determine the number of patients who experience the harmful effects which Lasik Surgery may cause. It is expected to be completed by 2012. Just recently, FDA sent out warning letters to 17 Lasik surgery centers for not giving full reports on the unfavorable effects of Lasik. Because of the reported negative after-effects by some Lasik patients, FDA will undergo a series of inspections to some centers for monitoring.
The price of Lasik ranges from $1000 to $5000 today. It is rather expensive. However, there are several Lasik financing options available, which is not a common knowledge. Generally, there is a very high percentage of the number of patients satisfied with the Lasik result. You must contact an ophthalmologist if you believe you are ready and able to undergo the Lasik procedure.
If you’re looking for landau scrubs such as landau shoes just follow the links!
Article Source:http://www.articlesbase.com/vision-articles/is-the-lasik-eye-surgery-best-for-you-1490504.html
Read More...
Contact lenses have been around for over one hundred years. In those early days, some people were not suitable to wear contact lense since the technologies were not so advanced. But nowadays, contact lenses are available for everyone. And contact lenses today are provided in more options that even colored ones are manufactured.
Contact lenses are one of the three ways that can correct eye diseases such as myopia, hyperopia and astigmatism. The other two are metal glasses and plastic eyeglasses such as LASIK. Actually, contact lense has been the choice of a considerable population. In the United States, about 20 percent of people who need vision correction wear contact lenses.
To some content, contact lenses are special eyeglasses, because they also use lenses to help people improve their vision. However, the two types do have some differences. Eyeglasses are visible to others. They have obvious frames and lenses. In contrast, contact lense is invisible to others, because the lenses are made of transparent materials. This feature of contact lenses does help some people who prefer their appearance without a pair of eyeglasses. Contact lense also eliminates their need for eye surgeries.
Contact lenses can provide the vision correction effects as well as any eyeglasses. Once you put them on, contact lenses “contact” your pupils. Contact lense is large enough to cover your whole pupil even if you turn your eyes around in all directions, so that it can provide complete vision correction. Contact lense just provides unobstructed vision, which is helpful during sports and other activities.
Article Source: http://blog.firmoo.com/basic-knowledge-of-contact-lenses.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/basic-knowledge-of-contact-lenses-1408911.html
Read More...
Refractive Errors: Myopia, Hyperopia and Astigmatism
Clear vision in the normal eye is due to the light rays falling on the eye and passing through the cornea, pupil and lens and focusing the image on the retina. An error in the focusing of light by the eye is called as Refractive Error. If the optical power of the eye is too large, light produces image focus in front of the retina and this is called as Myopia (Short-sightedness). If the optical power of the eye is too small, light produces image focus behind the retina and this is called Hyperopia (Long-sightedness). When the cornea is shaped like the back of a spoon, light gets focused on more than one point and a blurred image is formed on the retina and this is known as Astigmatism (Cylindrical Error) and is often associated with short sight or long sight.
Treatment Options for Refractive Errors:
There are different types of temporary and permanent treatment options for Refractive Errors. They are:
Temporary Options
This is the most common temporary solution to correct refractive errors because of easy maintenance and low cost. The drawbacks of spectacles are obvious. They interfere with activities and change a person’s appearance. Additionally, spectacles also reduce the peripheral vision.
Contact lenses are a popular alternative to spectacles. They provide excellent peripheral vision and permit a wider range of activities than spectacles.
Contact lenses do not change a person’s appearance. Problems with contact lenses include their recurrent costs, maintenance hassles and possibility of infection and intolerance due to sensitivities.
Permanent Options
There are various surgical options available for the permanent correction of these refractive errors. Your physician must choose the best treatment for your specific disorder. The person who wants to undergo a permanent treatment should be above 18 years and should have a stable spectacle power for over a year. S/he should not be suffering from other eye disorders like cataract, glaucoma, retinal disorders etc.
S/he should stop wearing soft contact lenses for 1 week & semi-soft contact lenses for at least 2 weeks prior to the procedure or measurements. Following are the permanent surgical treatments available for Refractive Errors:
Lasik (Laser in Situ Keratomileusis)
In Lasik, the corneal surface is reshaped using a laser beam. It corrects vision by altering refractive power of the eye by a calculated change in the corneal curvature. The image of the outside world is now focused sharply on the retina.
Wavefront Lasik or Customized Lasik
Wavefront Lasik or Customized Lasik is the result of a quantum leap in technology of sight restoration and enhancement. This Wavefront Guided Lasik is a giant step after conventional Lasik. Optical aberrations (imperfections) inherent in the eye may adversely affect the visual acuity and the optical performance of the eye. Conventional Lasik Eye Surgery can only correct the spectacle power & not these subtle optical aberrations. With Wavefront Guided Lasik, it is now possible to reduce these aberrations and enhance vision much above the normal levels. Custom Vue (VISx star S4 from AMO) is the procedure available for customized Lasik.
Benefits of Lasik/Customized Lasik
- Simple to perform
- Predictable
- Stable
- Brief recovery time
- Minimal discomfort
- Minimal post-op care
- Low enhancement rate
- Very low infection rate
- Very low risk of scarring
Dr. Sri Ganesh’s main interests are Cataract (Phacoemulsification) and Refractive Surgery. He has been in the forefront of latest technologies for Phacoemulsification and Refractive Surgeries. In the field of Refractive Surgery, he is one of the few persons to start Lasik Eye Surgery, Verisign Phakic IOL’s, Toric ICL’s, Conductive Keratoplasty, Intra Lase Custom Vue Lasik in South India. He has received ‘Best Phaco and Refractive Surgeon Award’ for the year 2006 from Indian Intraocular Implant and Refractive Society.
Article Source:http://www.articlesbase.com/vision-articles/refractive-errors-and-lasik-eye-surgery-1121160.html
Read More...
Lasik surgery is a method of refractive surgery that is used in the process of correcting myopia, hyperopia and astigmatism. The surgery is carried out by an ophthalmologist using laser techniques that are beneficial for the faster healing times a patient can expect.
Lasik surgery is often chosen as an alternative to traditional corrective vision methods such as glasses or contact lenses.
There are two methods of Lasik surgery. The first is the blade technique where a small hinged flap is cut into the cornea and lifted to one side while the laser carries out the corrective operation.
The second is the blade-less method and uses a high energy form of laser to carry out the same technique. Both methods are carried out with a minimal amount of pain to the patient.
Potential patients must undergo a consultation with a trained surgeon and a decision will ultimately be made based on the opinions of the surgeon and the benefits afforded to the patient if the procedure takes place.
If a patient decides to go ahead, it is recommended to stop wearing contact lenses as early as possible and revert to wearing glasses. Because contact lenses change the shape of the cornea, a period of settlement on the cornea surface is needed for an effective and safe procedure to be carried out.
On the day of surgery, the patient will be administered a relaxant medicine. The procedure itself lasts for around 30 minutes and begins with an anesthetic solution being dropped into the eye.
An instrument called a speculum is used to keep the eyelids open, and a ring will be placed over the eye to create suction on the cornea. If bladed surgery is being used, the flap will be cut and the suction ring will be removed.
The laser is then positioned and used to remove corneal tissue using a computer program to ensure the procedure is perfectly accurate. Patients may be aware of a smell similar to that of burning hair but shouldn’t’t feel much in the way of general discomfort.
Once the laser procedure is completed, a shield should be placed over the eye to allow the flap to seal. Care must be taken not to prod or rub the eye.
You should arrange to be picked up from the clinic where the surgery has been performed and resist the temptation to drive. Rest is recommended and a follow-up appointment should take place within 48 hours of surgery to check the healing process.
For the first month or so vision may fluctuate a little, but in the long-term a patient can expect a full return to perfect vision and freedom from the constraints of corrective vision methods.
To learn much more about lasik surgery, visit AllAboutLaserEyeSurgery.com where you’ll find this and much more, including the costs of lasik surgery, and other corrective laser eye surgeries.
Article Source:http://www.articlesbase.com/vision-articles/what-to-expect-after-lasik-surgery-1051606.html
Read More...