Myopia Control


Orthokeratology

Variable Focus Glasses

Variable Focus Contact Lenses

Medicated Atropine Eyedrops


Lifestyle Changes


Myopia
Myopia (short-sightedness) is a refractive vision condition where distance objects appear blurry but objects up close look clear due to light being focused in front of the retina (back of the eye). Myopia typically occurs as a result of the eyes growing too long and is commonly seen in children and young adults. Other causes of myopia include: genetics and environmental factors.
Presently, there is no cure for myopia but recent research has provided us with additional insight into myopia and there are options to slow down and even stop the progression of it (myopia control).

The latest theory of myopia control suggests that myopia progression occurs when light is focused on the peripheral (side) retina. It is believed that making the light out of focus on the peripheral retina can reduce myopia progression (termed myopic defocus). Speciality contact and spectacle lenses can achieve this.

Orthokeratology/ Overnight Contact Lenses

With orthokeratology (ortho-k) a specially designed contact lens is worn to correct and reshape your vision while you sleep! Upon waking the result is clear vision during the day without glasses or contact lenses.

As this process is completely reversible, your vision will go back to its original shape when lens wear is stopped.

Variable Focus Glasses

Zeiss created the MyoVisionTM lenses and are optical lenses designed to reduced myopia progression. The lenses look like your normal lenses but are specifically designed to allow clear vision through the centre of the lenses but the peripheral area creates myopic defocus.

The principle of these lenses is similar to ortho-k lenses and these lenses have shown to reduce the progression of myopia by up to 30% in certain groups.

Variable Focus Contact Lenses:

Variable focus/ multifocal contact lenses are typically wore by those over 40 who need additional help with their near work as well as correcting their distance vision. They work in the same way as the glasses with a clear centre power and a reduced outside power. However this system works better in a contact lens as the lenses stay centred on the eye as the eye moves, meaning the powers always stay in optimum alignment.  Again, preliminary studies have suggested reductions in the short-sightedness of around 30%.

Atropine/ Medicated Eyedrops

These are a very weak form of an eye drop that is usually used to dilate (enlarge) the pupil of the eye. The mechanism by which the drug reduces short-sightedness is unknown but again results have been encouraging.

Atropine is a prescription only medication. It can be prescribed by a therapeutically qualified optometrist or ophthalmologist. Currently only one pharmacy in Auckland is making preparations of these eyes drops at a concentration sufficiently weak for the use of preventing short-sightedness.


Lifestyle Changes

Spend more time outside:

Living in a city is definitely bad for young eyes. Aucklandís not huge on a world scale but all of the factors of sedentary urban living still are at play. Studies show rates of childhood short-sightedness as low as 3% in non-urbanised cultures such as the Sherpas of Nepal and in Vanuatu but rates as high as 60% in highly urbanised countries such as Taiwan. The prevalence of myopia among Singaporean Indians has been reported as high as over 70% while remaining 10-20% among Indians living in India.

Summary

Currently there is no cure for myopia but with the latest scientific research there are now multiple options available to help slow down and even potentially stop the progression of myopia.

All these options are available at Frith and Laird and our optometrists are constantly up to date with the latest research and will be happy to answer any questions.


1st Floor, 157 Great South Rd, Manurewa

E frithandlaird@visique.co.nz


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