Difference between revisions of Guide:Reading glasses prescriptions
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How do you read these complicated things!? Believe it or not, they're actually pretty simple to understand. First things first, remember myopia is not a medical condition, it is a refractive error. Therefore, your "prescription" is much more accurately referred to as vision [[correction]]. | How do you read these complicated things!? Believe it or not, they're actually pretty simple to understand. First things first, remember myopia is not a medical condition, it is a refractive error. Therefore, your "prescription" is much more accurately referred to as vision [[correction]]. OD is oculus dextrus, or Latin for right eye. OS is oculus sinister, or Latin for left eye. | ||
==Spherical== | ==Spherical== | ||
{{main|Spherical}} | {{main|Spherical}} | ||
Spherical is the overall correction, in all directions. It is measured in [[diopters]]. A minus value means the lense is used correct [[myopia]] and a plus value means it is used to correct [[presbyopia]]and or [[hyperopia]]. | Spherical is the overall correction, in all directions. It is measured in [[diopters]]. A minus value means the lense is used correct [[myopia]] and a plus value means it is used to correct [[presbyopia]] and/or [[hyperopia]]. | ||
==Cylinder== | ==Cylinder== | ||
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| Decreases myopia correction || Increases presbyopia correction | | Decreases myopia correction || Increases presbyopia correction | ||
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[https://www.youtube.com/watch?v=0AyE1BmKUh8 Explanation of positive vs. negative cyl correction] | |||
==Axis== | ==Axis== | ||