![]() 7 Executive bifocal spectacle lenses incorporated with base-in prism are available in many countries. ![]() 6, 8 An exception was executive bifocals with and without base-in prism that reduced myopic progression by approximately 51 percent (spherical equivalent) compared to single-vision spectacles. 1 2, 3 Bifocals and progressive addition lenses (PALs) were found effective only in few categories, such as those with a larger lag of accommodation 4-7 or faster myopia progression in myopia. Although undercorrection was widely practiced, it was shown to increase myopia progression. Up until 2010, the only options available to control myopia with spectacle-based strategies were progressive addition or bifocal spectacles. These lenses are ideal not only for digital devices, but also for reading books and magazines.By Krupa Philip, PhD, Brien Holden Vision InstituteĪlthough 2020 is a year that many will consider as best forgotten or relegated to history, for spectacle-based myopia management strategies, it marks the end of a decade of rapid and significant improvements to slow myopia. ZEISS Digital Lenses offer the perfect remedy by enabling fast, comfortable focusing thanks a specially optimised near zone – no matter where we look. In Germany, for example, 50 percent of the population suffer from one or more of these symptoms, i.e. Headache and neck strain, burning or tired eyes may be the result, particularly as we get older. ![]() This places extreme strain on the ciliary muscle and the lens of the eye which have to constantly re-adapt to ensure that what we see is clearly focused. In just a fraction of a second they have to move between far and near: from viewing something in the distance to small displays, tiny fonts and tightly packed information –and then back again. The use of digital technology demands the utmost from our eyes. From the age of 30 onwards, this can lead to digital eyestrain or, as the experts put it, the Computer Vision Syndrome. Small font sizes and the constant switching of our viewing focus from near to far objects demands the utmost from our eyes. And we glance at our mobile phones as many as 80 times a day! And these figures are set to rise in the future. On average, we look at our smartphones, tablets or TV screens for almost five hours every day.
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