In Canada, Myopia affects about 40% of the population.
Lynn Valley Optometry is one of the leading centres in Canada offering the most diverse methods to slow down prescription changes due to Myopia.
As a patient of our clinic you will have access to the latest technologies for preventing Myopia. Some of the services we offer to slow down Myopia include VST (Ortho-K), prescribing specialized anti-Myopia spectacle lenses and multifocal contact lenses, as well as behaviour and environment modification.
If you’re living with Myopia, ask us how we can help. We are experienced in treating Myopia and have many options available to you.
In order for us to formulate an effective treatment regimen we must first get an accurate assessment of the current state of your eyes. One of our Optometrists will provide you with a clear perspective on the current state of Myopia and what your treatment options are.
In addition to optical treatments, we may also provide insight on other lifestyle choices that can help mitigate Myopia. Your Optometrist will walk you through dietary, environmental, and lifestyle changes that are known to assist with Myopia.
Lynn Valley Optometry is one of the leading centers in Canada offering the most diverse methods to slow down prescription changes due to Myopia. Myopia is the medical term for nearsightedness, or difficulty in seeing distant objects.
One reasoning for increasing Myopia with traditional lenses is that they under correct the Myopia in the peripheral retina. Figure 3 below shows when myopic eyes are corrected with traditional spectacle or contact lenses, the retinal image is in focus at the central retina (green line). However images are projected behind the retina peripherally (yellow and blue lines), which is a strong signal for increasing Myopia by axial elongation of the eye. The goal would then be to provide treatment modalities that would project images on or in front of the peripheral retina which has an effect of sending a stop signal to the eye to manage eye elongation (see Figure 4). The eye simply stops growing, thanks to the Peripheral Management technology.
This break-through process is designed to correct your vision while you sleep with customized shaping lenses, allowing you to have clear vision while you’re awake. These lenses are worn only overnight. Remove in the morning and enjoy clear sight all day. VST is a safe and successful alternative to conventional contact lenses, eyeglasses, and laser surgery.
Also known as Corneal Refractive Therapy (CRT), Accelerated Orthokeratology (AOK), Gentle Vision Shaping Treatment (GVST), Ortho-K and corneal molding) uses specially designed vision retainers to gently and gradually reshape the front surface of the eye (the cornea) to eliminate or reduce Myopia or astigmatism. By flattening the cornea the retainers reduce the focusing power of the eye and therefore it is possible to bring the eye into correct focus and compensate for the Myopia. The principle is similar to the use of a dental retainer used by an orthodontist to realign crooked teeth. The vision retainers are similar to contact lenses and are only worn at night while sleeping. They are then removed upon awakening to provide clear vision without using glasses or contact lenses! After the retainers are removed, the cornea retains its flattened shape for the remainder of the day. A retainer lens must be used every day or every other day to maintain the corneal flattening, or the Myopia will revert to the pre-treatment level. The retainers are comfortable and very easy to care for.
We use two types of eyewear technology for patients interested in preventative options. One modality is a dual focus lens where objects in the distance are viewed in the upper portions of the lenses and objects nearby through the lower portions. These lenses seem to work well for people with esophoria (over convergence when reading) and a lag of accommodation (trouble focusing at near) and not only help slow down their prescription but also reduce eye strain and visual stress.
Another is MyoVision lenses by Zeiss utilizing Peripheral Management technology which has shown to reduce the progression of Myopia in East and Southeast Asian children between the ages of 6 and 12 years old by 30%. MyoVision lenses create a ring of increased plus power around the central area of clear distance power. This ring of power creates what is called a peripheral Myopia which has been shown to slow myopic progression.
Peripheral Myopia has been shown to function as a stop signal for further growth. When eyes grow longer, they become more myopic so stopping growth is desired. The signals for this growth are in the peripheral retina.
For the lenses to work, it is necessary to use the central portion of the lens for viewing. Children are generally very adaptable.
An autorefractor test is similar to a refraction test, where the optometrist determines the lens power required to accurately focus light on your retina. This test is essential when verifying a child’s eyeglass prescription. Modern day autorefractors are very useful as they save time and are very accurate.
Specialized multifocal contact lenses have also shown to help slow down Myopia but not generally as effectively as VST. In Hong Kong there is currently a specially designed one day multifocal contact lens for Myopia prevention. This lens is not yet available in Canada, however we have other similar designs in soft and GP lenses that can help. The most effective contact lenses have a center-distance design (distance prescription in the center of the lens and reading prescription in the surrounding periphery).
For convenience, safety and efficacy we are recommending Coopervision’s new one day disposable multifocal contact lens for those interested in preventing their prescription from getting worse.
Near visual stress has shown to be an important risk factor for Myopia however there is great variability depending on other factors. At the present time we can’t say that reading, by itself, causes Myopia. But there are some studies indicating that inaccurate focusing while reading (lag of accommodation) is a risk factor for Myopia development. Reducing visual stress allows for more efficient and effective work and may help slow down Myopia and astigmatism progression.
The ergonomically correct, visual stress relieving work place should have the following components:
Studies have shown higher rates of Myopia in societies with a diet of highly refined sugars and cereals, high saturated fat, low protein consumption, and high carbohydrate intake causing increased insulin levels. Possible nutrients that help with blood sugar regulation may help slow down Myopia include chromium, potassium, Omega 3 fatty acids, amino acid complex, Vitamin C, bilberry, glutathione and alpha lipoic acid.