Using Charts To Convert Glasses Prescriptions To Contact Lenses

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Converting a glasses prescription to contact lenses ranges from extremely simple to convoluted and time consuming. That’s because there are lots of calculations involved. But if the process involves following the same formula every time, why can’t the results for … Read More

Can You Convert a Contact Lens Prescription To Glasses?

This article explores the topic of whether or not it is possible to convert a contact lens prescription to a glasses prescription. A prescription for glasses is not the same as a prescription for contact lenses. The differences in how … Read More

Spectacle Calculator by CooperVision Review – SPOILER: It’s not good

The Spectacle Calculator by CooperVision is an online application that can be used to convert your glasses prescription to the corresponding contact lens parameters. It can be found directly on CooperVision’s website at https://coopervision.com/practitioner/tools-and-calculators/spectacle-conversion-calculator When I first saw this calculator, … Read More

Converting a Glasses Prescription To Contact Lenses TUTORIAL – Part 4

Part 4 – The Power Cross & Advanced Conversion Charts In part 1, part 2 and part 3 of this tutorial series, you learned all about how lenses work, why prescriptions for glasses are sometimes different than prescriptions for contact … Read More

Converting a Glasses Prescription To Contact Lenses TUTORIAL – Part 3

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The Axis What is the Axis? As I’ve discussed in part 1 and part 2 of this tutorial series, when you have astigmatism, it means that your cornea has 2 principle curvatures in it, which requires two different lens powers in order … Read More

Converting a Glasses Prescription To Contact Lenses TUTORIAL – Part 1

Due to popular request from optician and optometry students, as well as regular glasses and contact lens wearers, I will be doing a comprehensive set of tutorials on how to do back vertex conversions i.e., how to convert a glasses … Read More

3 Ways to Convert Your Glasses Prescription to Contact Lenses

Realizing that the numbers in your glasses prescription are not always the same numbers that are needed for your contact lenses is an important first step in being successful with contacts. Ordering the wrong power in your contact lenses can … Read More