I love travelling and the tropics are one of my favourite destinations. Great food, bath tub warm seas and beautiful beaches. However travellers wearing contact lenses should be extra careful in tropical climes. The warmth and humidity are great environments for fungi, amoebi and bacteria to flourish, and a contact lens related infective ulcer can bring a rapid end to your holiday and worse still, permanent loss of vision in some cases.
Laser eye surgery has until now been an irreversible procedure. A year long experimental project I undertook whilst in Singapore, now published in the scientific journal PLos One, describes our pioneering, innovative work on developing a reversible type of laser eye surgery. The technique is based on a new type of laser procedure called ReLEx performed with the Visumax femtosecond laser.
To read more, click the link
The light from distant stars is distorted and bent as it travels through space to reach us on earth. Astronomers use a technology called wavefront analysis to measure and compensate for these changes in the light path as it travels through the universe to allow them to see the stars in their undistorted true form. This technology is now used during laser eye surgery to detect any aberrations or distortions in the optical system of the eye. These measurements go beyond a simple vision correction based on your glasses to refine and optimise the optics of the eye. Wavefront guided and wavefront optimised custom LASIK/LASEK laser vision correction gives the best possible quality of vision by attempting to correct all aberration within the visual system.
Scientific discovery is far reaching and mans quest to understand the heavens means that laser vision surgery is better than ever before.
For life without limits and to find out if you can have laser vision correction contact us today
Did you know that the US military has been performing laser eye surgery on frontline personnel for over a decade?
However, it's not LASIK, but LASEK and PRK that is performed on military personnel likely to see active war zone duty. Many large studies have shown that surface procedures such as LASEK and PRK give the same excellent visual results as the more popular LASIK procedure.
So why not LASIK if your a elite Navy SEAL? The first step of LASIK involves making a precise flap in the cornea, which allows the vision correction laser to be applied beneath the flap. If you're in a profession where you're likely to suffer facial trauma (as in a war zone) this flap can be dislodged resulting in temporary loss of vision. Clearly, not ideal if you're in the middle of a gun battle! Surface procedures such as LASEK and PRK don't have a flap. The laser is applied directly onto the surface of the eye, which then heals over.
If you're in the military, police, or like full contact or extreme sports, your doctor may recommend LASEK or PRK rather than LASIK. You can be reassured that these procedures have been tested in some of the toughest theatres of war around the world.
LASEK and PRK also disturbs less corneal tissue than LASIK and your doctor may recommend this of you have thin corneas. The results are exellent with all these techniques.
JT's new album cover titled 'The 20:20 Experience' shows the singer in a dinner jacket standing behind a phoropter, a common ophthalmic instrument used to measure the power of peoples glasses. Whilst the cover photo and title of the album are a laser eye surgeons idea of dream celebrity marketing. The album has received mixed reviews
For the real 20:20 experience contact our team today :)
Mr Angunawela was recently interviewed by Askimo TV, an internet 'TV station' that interviews experts around the world on various subjects. He was asked some common questions about laser eye surgery.
Radial keratotomy or RK (some patients call it the pizza pie operation) is an out-dated type of corneal surgery that began in Russia and was used to treat short-sight (myopia). The surgery involved making several radial incisions in the cornea (the number of incision was variable and ranged between four to sixteen depending on the degree of attempted correction). These incisions caused a central flattening or relaxation of the cornea, with resulting reduction or even full correction of short sight. In fact, the procedure was very effective, and many patients underwent this procedure in the 1980's and early 1990's before it was abandoned, and had very good correction of their vision.
The long term study of this procedure was completed after 10 years as part of the PERK study, which revealed that the central cornea continued to flatten in RK patients and that they became more longsighted (hyperopic) over time (shifting from initial short sight).
Many people who had RK now find themselves long sighted and requiring glasses to see in the distance. Also, as many have now reached the age where they are struggling to read and see things close up (presbyopia), they find that they require glasses for near and distance vision. Symptoms such as haloes or starbursts around lights, particularly at night are quite common. Depending on age, some patients may also have cataracts.
So what are the options for vision correction in patients who had RK and are now struggling with their vision?
There are in fact a number of effective treatments for improving vision after RK surgery. The best option for the patient must be decided on a case by case basis and is dependent on a number of factors including patient age and presence of cataract. If a patient achieves a good level of vision with glasses for near and distance, then the chances of improving their vision with a surgical procedure is more likely. The options for these patients are as follows;
- Clear lens extraction
- Cataract surgery (if cataract is present)
Patients in whom RK has resulted in an irregular corneal surface may not achieve good vision with glasses. In these patients the cornea may need to be 'smoothed' using topography guided laser eye surgery and vision may be improved by combining with one of the procedures listed above.
Patients should note that the predictability of all types of surgery are less accurate after RK compared with an eye that has not had any previous surgery. Multifocal lenses for instance may not perform well in an eye with previous RK.
Finally, recent reports suggest that collagen cross linking may be useful as a treatment to stop further progression of long sight in hyperopic patients.
Yours surgeon should discuss all these issues with you at your consultation.