Posts filed under VIsian ICL

Justin Timberlake bringing sexy back to 20:20 vision!

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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 :)

Read more on Vibe Magazine

Options to improve vision after radial keratotomy (pizza pie) 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. 

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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;

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  • Clear lens extraction

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.

What are the options for safe vision correction in very high myopia (short sightedness)?

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High myopia above -6 dioptres is debilitating. Patients are chained to either glasses or contact lens wear, without which the world around them is really very blurred. 

Not unsurprisingly, it is this group of patients that often seek the expertise of an eye surgeon with regard to getting rid of their glasses or contact lenses. So, what is the best and safest option for people with high myopia?

Laser eye surgery (LASIK and LASEK) can safely correct up to -10 dioptres of myopia but may be limited by the patient's corneal thickness. As the laser removes more corneal tissue as the attempted correction increases, it is important to keep in mind that a safe residual corneal thickness of at least 300 microns must be left behind after the treatment for structural integrity. If a patient has a thinnish cornea, it may thus be difficult to fully correct their vision whilst respecting the need to preserve a safe margin of corneal tissue. 

For patients with thin corneas and those with levels of short sight even greater than -10 dioptres, the Visian ICL is a safe and highly effective option. The Visian ICL is a phakic intraocular lens ( it is positioned in front of the patients natural lens ) that can correct up to -25 dioptres of myopia and up to 7 dioptres of astigmatism. The Visian ICL often gives a better quality of vision than laser vision correction for higher levels of myopia due to the fact that no new optical aberrations are created ( laser create aberrations at higher corrections, hence the need to use wavefront technology ). Better still the procedure is reversible and visual recovery very rapid. 

The Visian ICL should be inserted by a trained Visian surgeon.

Visian ICL