Difference between revisions of Blur
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= Myopic vs Hyperopic Blur = | = Myopic vs Hyperopic Blur = | ||
Myopic blur is the type of blur normally experienced by people with uncompensated [[myopia]]. Hyperopic blur is the type normally experienced by people with uncompensated hyperopia. In order to induce blur, use a lens with the opposite [[diopter]] sign as the lens normally used for blur correction, so a plus lens will give myopic blur to an [[emmetrope]]. | Myopic blur is the type of blur normally experienced by people with uncompensated [[myopia]]. Hyperopic blur is the type normally experienced by people with uncompensated hyperopia. In order to induce blur, use a lens with the opposite [[diopter]] sign as the lens normally used for blur correction, so a plus lens will give myopic blur to an [[emmetrope]]. A weak negative lens will give myopic blur to a myope. | ||
Studies show that extreme hyperopic blur conditions induce myopia in growing animals, and myopic blur in growing myopic animals can partially reverse this. | Studies show that extreme hyperopic blur conditions induce myopia in growing animals, and myopic blur in growing myopic animals can partially reverse this. | ||