OTRHO-K HAS BEEN PROVEN TO SLOW DOWN INCREASES IN MYOPIA BY MULTIPLE STUDIES
Check for myopia risk factors in your child.
What is Myopia?
Generally, a newborn’s eyeball is shorter than ideal, but its length increases with age. Under normal conditions, the length of the globe of the eye will increase to an ideal length by adulthood. With the eyeball at an ideal length, one will see well all the time, both near and also at a distance.
Unfortunately, many eyeballs simply do not grow to an ideal length by the time a child reaches adulthood. Myopia is a condition where the globe of the eye has become elongated from its ideal length. This causes light to focus at the front of the retina instead of on the retina. A person with myopia (nearsightedness) will not be able to see things clearly at a distance without wearing corrective lenses such as glasses or contact lenses.
The globe of the eye overgrows due to both genetics and environmental factors. In the U.S., the prevalence of myopia in adults has increased from 25% in 1979 to nearly 50% in 2016 (10). In China, the prevalence of myopia in the university student population is approximately 90%. The average degree of myopia among these students is over 4.00 D according to one study done in Shanghai (17).
These alarming statistics are even more frightening if you consider the health risks of having myopia. Myopia increases the chance of developing serious eye ailments such as retinal detachment, glaucoma, cataract and other sight-threatening diseases (8). although any degree of myopia is a risk factor for future vision loss, high myopia of more than 6.00 D is associated with a very high risk of these conditions. For example, persons with more than 6.00 D of myopia have a 14.4 times greater chance of developing glaucoma (2). Those with over 8.00 D of myopia have a 7.8 times greater risk of having a retinal detachment (8). Myopia is now the second highest leading cause of visual impairment in the world.
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18. Sun, Yuan, et al. “Correction: Orthokeratology to Control Myopia Progression: A Meta-Analysis.” Plos One, vol. 10, no. 6, Nov. 2015
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21. Zhao, Hai-Lan, et al “Role of Short-Wavelength Filtering Lenses in Delaying Myopia Progression and Amelioration of Asthenopia in Juveniles.” International Journal of Ophthalmology, 2017
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