This tool converts your eyeglass prescription into a format suitable for ordering contact lenses.
How To Use The Vision Prescription Calculator
This calculator allows you to input your vision prescription parameters to get a coherent overview of your prescription details. Enter your sphere (SPH), cylinder (CYL), axis, and addition (ADD) in their respective fields and click the ‘Calculate’ button.
Explanation of Parameters
- Sphere (SPH): This indicates the lens’ ability to focus light, measured in diopters. A negative value indicates nearsightedness, and a positive value indicates farsightedness.
- Cylinder (CYL): This corrects astigmatism. The value may be either positive or negative.
- Axis: This tells the lens where to correct the astigmatism, and its values range from 1 to 180 degrees.
- Addition (ADD): This is an additional power added to the reading portion of a multifocal lens for those with presbyopia, measured in diopters.
Calculator Limitations
This calculator is intended for general information purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult your optometrist or ophthalmologist with any questions you may have regarding your prescription.
Use Cases for This Calculator
Determine Eyeglass Prescription
When you need new glasses, figuring out your eyeglass prescription can be daunting. By using a vision from prescription calculator, you can easily convert the values from your eye exam into the specific measurements for your new eyewear.
Check Contact Lens Prescription
If you’re considering switching from glasses to contact lenses, you’ll want to know your contact lens prescription. This calculator helps you convert your eyeglass prescription into the appropriate parameters for contact lenses.
Order Glasses Online
Shopping for glasses online can be overwhelming without the right prescription information. The vision from prescription calculator allows you to input your current prescription and obtain the necessary details to confidently place your order.
Compare Brand Options
Different eyewear brands may require slight adjustments to your prescription. You can use the calculator to ensure you’re getting the right values for any brand you wish to explore, helping you make a well-informed decision.
Avoid Confusion with Spherical & Cylindrical Values
Understanding the difference between spherical and cylindrical values in prescriptions can be tricky. This calculator simplifies the process, allowing you to easily decipher your prescription without getting lost in technical jargon.
Adjust for Bifocal or Progressive Lenses
If you need multifocal lenses, transitioning your prescription can be complicated. With the vision from prescription calculator, you’ll get precise adjustments tailored to your bifocal or progressive lens needs.
Easily Update Your Prescription Information
As your vision changes over time, keeping track of your updated prescription can become a hassle. The calculator helps you quickly adjust your existing information, making it easier to stay current with your optical needs.
Understand Astigmatism Corrections
Astigmatism can complicate your lens prescription, requiring specific adjustments. The tool allows you to see how your eyeglass prescription translates into effective corrections for astigmatism, ensuring optimal visual clarity.
Optimize Visual Comfort
Wearing the wrong prescription can cause unnecessary strain and discomfort. The calculator helps you pinpoint the exact values needed for maximum visual comfort, allowing you to enjoy clearer vision immediately.
Facilitate Doctor-Patient Communication
Having a clear understanding of your prescription can greatly enhance discussions with your eye care professional. Using the vision from prescription calculator, you can articulate your needs and questions more effectively during your next appointment.