Posts Tagged ‘corneas’
LASEK surgery is a form of laser eye surgery that corrects refractive errors by reshaping the cornea – to this day, thousands of people the world over have benefited from this revolutionary procedure. LASEK eye surgery is performed on patients whose corneas are either too thin or too flat for LASIK eye surgery, but both procedures offer the same results in vastly improved vision and negate the need for glasses or contact lenses.
Who Can Benefit From LASEK Eye Surgery?
Patients who suffer from refractive errors will be delighted to learn that LASEK eye surgery can once and for all allow them to live life with more freedom and no longer rely on corrective eyewear.
LASEK eye surgery can be used to treat the following refractive errors:
- Short-sightedness (myopia) – This eye condition results from the cornea being slightly rounder and shorter than it should be. Due to this, the light that enters the eye converges just in front of the retina, meaning that suffers experience difficulty when trying to see a clear image at a distance. Through LASEK eye surgery, the shape of the cornea is corrected and the light is made to focus precisely on the retina – meaning that the blurred images at a distance will become a thing of the past, eliminating the effects of short-sightedness!
- Long-sightedness (hyperopia) – Patients who suffer from hyperopia have a cornea that is slightly flatter and shorter than it should be. This results in a blurred image because the light that enters the eye focuses on a point just behind the retina. Most people who suffer from this refractive error rely on glasses on contact lenses, but through LASEK eye surgery, the effects of hyperopia can be permanently corrected. That means no more headaches and straining eyes to get objects – both near and far – into focus.
- Astigmatism – In this case, the cornea is a more conical shape than it should be – this means that light enters at different angles through this cone. This creates two points of focus and ultimately a blurred image. Although this condition is slightly more complex than myopia or hyperopia, using the right technology, virtually all astigmatism symptoms can be treated through LASEK eye surgery.
What Does the LASEK Procedure Involve?
A patient is deemed an appropriate candidate for LASEK eye surgery when they suffer from one of the above mentioned refractive errors and usually because their cornea is not thick enough to withstand LASIK eye surgery. During the LASEK procedure, an ophthalmic surgeon focuses of the preservation of the corneal epithelium. In this way, the procedure differs from both LASIK and as the surgeon does not create a corneal flap or scrape and remove the epithelium.
LASEK treats the epithelium with a diluted alcohol solution which loosens it; the surgeon then rolls the epithelium tissue back and works with a laser to reshape the exposed corneal tissue beneath. The surgeon then simply smoothly rolls back the epithelium cells in their new reshaped position.
What Happens After Laser Eye Surgery?
Recovery time from LASEK eye surgery tends to take slightly longer than that of LASIK, but in the hands of expert surgeons, the visual outcomes are the same. Patients experience vast vision improvement with maximum convenience.
Post-treatment, patients are usually prescribed medicated eye drops which aid the healing process and relieve any temporary discomfort during this time. For about the first week, patients are given a night shield to wear when sleeping, which prevents any accidental rubbing of the eyes. In some cases, patients are fitted with soft contact lenses to give further protection to the healing eyes.
Patients who undergo LASEK eye surgery will find they have a newfound freedom as they no longer have to rely on glasses or the deal with the hassles of contact lenses or spectacles. Due to their vast visual improvement, many patients say that their self-esteem is boosted, along with their confidence!
The London Vision Clinic is leading laser eye surgery clinic in the UK, boasting world-class ophthalmic surgeons who expertly perform LASIK and LASEK eye surgery. If you suffer from a refractive error and are considering LASEK eye surgery, contact one of the Patient Education Consultants at the London Vision Clinic today to set up a screening to determine your suitability for the procedure.
Article Source:http://www.articlesbase.com/vision-articles/a-guide-to-lasek-eye-surgery-1675407.html
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The long term side effects of refractive surgery have been a concern for all patients and doctors alike. When Radial Keratotomy(RK) was being performed; there were many unknowns. Flattening the corneas with radial corneal incisions stretched the endothelial layer decreasing its’ ability to pump water out of the cornea. While most RK surgeons were not worried about the long term corneal hydration, questions did remain as to what would occur years after the procedure.
These RK patients do have corneal issues 10 plus years later. Their corneas often display a brownish line in the bottom half indicating iron left behind when the endothelial pump removes fluid from the cornea. In addition, most of these patients are far sighted with astigmatism and their prescription gets stronger later in the day. This makes it difficult to have an accurate eye glass prescription. Weakness of the cornea also increases the risk of corneal rupture when exposed to trauma.
LASIK and PRK do not flatten out the entire width of the cornea thus leaving the endothelial layer intact. This does not affect the pump or the functioning of the physiology of the corneal tissue. Therefore negative corneal changes that are displayed in RK patients should not occur in the LASIK and PRK patients.
According to an article published in the November issue of the Archives of Ophthalmology, there are no long term destructive corneal effects following LASIK and PRK. The study examined 29 myopic LASIK and PRK patients 9 years after the surgery and found them to display no abnormal changes. There was a 5.3% decrease in the endothelial cell density which corresponds to a normal cell decrease in individuals that never had the refractive procedure.
While the study did not examine far sighted post operative patients, they concluded that the results would be similar to the near sighted patients. Whereas post operative RK patients displayed corneal changes after 5 years, the LASIK and PRK patients did not show any signs after 9 years. Further studies must be conducted at longer post op intervals to fully examine the long term effects, but this initial study is very encouraging.
Dr. Jay B Stockman is a practicing doctor for http://newyorkvisionassociates.com, and a contributing expert for VisionUpdate.
Article Source:http://www.articlesbase.com/vision-articles/long-term-effects-of-lasik-and-prk-are-encouraging-1678212.html
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In modern world, with the fast pace of advanced technology and science, it is not unusual for us to find more and more high-tech products. So, for a lady who enjoys dressing up, who feels it an obstacle to show her beauty to others due to that pair of glasses, it is quite normal to buy contact lenses.
It is true that contact lenses can help some ladies get rid of the machine look of wearing frame glasses. However, ladies must be more careful to protect their eyes when wearing contact lenses since they are attached to eyeballs. They are more likely to cause problems to eyes if you do not pay enough attention. Here are some advices for ladies who are wearing or preparing to wear contact lenses.
1.Pay enough attention to hygiene. You must make sure that you wash your hands when you are wearing or taking out contact lenses.
2.You should change your contact lenses and check the health of your eyes regularly. Try to follow the instruction and your optometrist’s advice.
3.Wear your contact lenses before make-up and take them out before remove your make-up.
4.Don’t wear contact lenses when you sleep because they will stop your corneas getting enough oxygen?which is not good for your eyes.
5.You’d better wash your contact lenses with special contact lens care solution in order to kill bacteria. And what’s more, the contact lens care solution should be replaced every four months in case they go bad.
6.You need too use boiling water to wash your contact case regularly for fear of bacteria. Or, it is more likely of you to get your eyes infected.
7.It is better for those ladies who get a cold or fever, in a intermenstrual period, has eye diseases, over 40 years old or pregnant to wear contact lenses not wear contact lenses.
These are advice I give you according to my own experience of wearing contact lenses. Everyone should try their best to protect their eyes. After all, it is eyes that present the colorful world to us. So, take these advices and protect your eyes to enjoy the world.
Wanna find good and fashionable and affordable glasses?Here at http://www.glassesshop.com, all kinds of glasses are avaiable. You can choose a pair of cool sunglasses for your friends, a pair of practical ones for your grandparents and so on. Just give it a try!
Article Source:http://www.articlesbase.com/vision-articles/advice-for-wearing-contact-lenses-1635513.html
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A new therapy comes to people’s eyes, and it is the gospel to people all around the world. This modern technique is called Laser eye surgery, and it receives more and more people’s welcome.
Most of eye disorders are tired of wearing glasses all day long or are bothered with seeing nothing without glasses. They have to wear special glasses when doing sports and they are considered as being impolite for not saying hello to friends. These are all the troubles encountered by the eye disorders. Now these problems can all be settled with the appearance of Laser eye surgery. No matter how deep the degree of your glasses, you can do this surgery.
Laser eye surgery mainly has two types – LASIK and LASEK. The latter is more suitable for those with thin or flat corneas while the case of LASIK is the opposite.
Though the eye surgery is popular among the eye disorders, there is still something the surgery can’t deal with. So you must know the details about the surgery before going to do the operation.
The laser used in the surgery must have been strictly tested. Only those which can cut 0.25 microns of tissue per pulse can be applied to correcting eyesight. Furthermore, you should make sure which area of the cornea is fit for being reshaped.
Not everyone suits for the Laser eye surgery actually. Only the problems of myopia, hyperopia and astigmatism can be corrected well. So if you are in these cases, Laser eye surgery is the best choice, I promise.
You need not to worry about the food that you eat in daily life will affect the result of the surgery, so you can enjoy your food as usual. Ophthalmologist will drip some anesthetic on your eyes before operation, so you will certainly run out of being hurt. However, if you wear contact lenses, you should take them off a week before operation in case the cornea is misshaped. Moreover, people who have the problem of gas permeability need to take off contacts up to four weeks.
Laser eye surgery can be finished within half an hour, and it hardly hurts patient. Nevertheless, it’s not permitted that you drive home alone right after the surgery. So ask someone to company with you to take you home safely.
If you want to know more about Vision knowledge, then feel free to visit http://vision.firmoo.com/
Firmoo.com is the emerging online optical store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo’s return and refund policy makes any purchase risk-free ones.
Article Source:http://www.articlesbase.com/vision-articles/eye-disorders-please-clap-your-hands-1624322.html
Read More...
A new therapy comes to people’s eyes, and it is the gospel to people all around the world. This modern technique is called Laser eye surgery, and it receives more and more people’s welcome.
Most of eye disorders are tired of wearing glasses all day long or are bothered with seeing nothing without glasses. They have to wear special glasses when doing sports and they are considered as being impolite for not saying hello to friends. These are all the troubles encountered by the eye disorders. Now these problems can all be settled with the appearance of Laser eye surgery. No matter how deep the degree of your glasses, you can do this surgery.
Laser eye surgery mainly has two types – LASIK and LASEK. The latter is more suitable for those with thin or flat corneas while the case of LASIK is the opposite.
Though the eye surgery is popular among the eye disorders, there is still something the surgery can’t deal with. So you must know the details about the surgery before going to do the operation.
The laser used in the surgery must have been strictly tested. Only those which can cut 0.25 microns of tissue per pulse can be applied to correcting eyesight. Furthermore, you should make sure which area of the cornea is fit for being reshaped.
Not everyone suits for the Laser eye surgery actually. Only the problems of myopia, hyperopia and astigmatism can be corrected well. So if you are in these cases, Laser eye surgery is the best choice, I promise.
You need not to worry about the food that you eat in daily life will affect the result of the surgery, so you can enjoy your food as usual. Ophthalmologist will drip some anesthetic on your eyes before operation, so you will certainly run out of being hurt. However, if you wear contact lenses, you should take them off a week before operation in case the cornea is misshaped. Moreover, people who have the problem of gas permeability need to take off contacts up to four weeks.
Laser eye surgery can be finished within half an hour, and it hardly hurts patient. Nevertheless, it’s not permitted that you drive home alone right after the surgery. So ask someone to company with you to take you home safely.
If you want to know more about Vision knowledge, then feel free to visit http://vision.firmoo.com/
Firmoo.com is the emerging online optical store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo’s return and refund policy makes any purchase risk-free ones.
Article Source:http://www.articlesbase.com/vision-articles/eye-disorders-please-clap-your-hands-1624345.html