After your eye exam you’re given a sheet of paper with a heck of a lot of numbers. Yay??? That piece of paper actually reveals all sorts of information about your eyes.
There’s a few parts to your prescription.
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Nearsighted (Myopia) and/or Farsighted (Hyperopia)
A nearsighted prescription will be indicated by a (-) while a farsighted prescription is indicated by a (+). This tells us how much power you would need to bring the focus on the back of your eye.
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Astigmatism (Cylinder)
When the dome shaped structure in front of the eye (Cornea) is not perfectly round, it creates a 2nd focus. This can be corrected to create a single image by adding a cylinder power to the lens.
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Axis
The axis gives the orientation of the astigmatism.
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Add power
For those us, by us I mean you, who have the pleasure of having “maturing” eyes or short arm syndrome, an add power will help with reading.
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Prism
Prism(s) are used to align the eye. So lets say you have an eye that wonders, pulls to one side, and/or higher than the other. This can result to headaches, eye fatigue, and double vision. Prism lenses will help keep them straight, relaxed, and allow you to see a single image.
Not all glasses are created equal. Relying on your optician’s experience, expertise, and quality products plays a huge roll in getting the best pair of glasses that can provided excellent vision. So when the time comes, shop reputation, shop reliability, shop proficiency, and shop quality.