How does the Eye Prescription Converter work?

Understand standard prescription format (Sphere, Cylinder, Axis) Then: Calculate spherical equivalent if needed Then: Convert between different measurement systems.

Can you give an example of how to use the Eye Prescription Converter?

Example: Input Rx: -2.00 -0.50 x 180 gives a result of Spherical Equiv: -2.25 D (Standard eyeglass prescription notation).

Is the Eye Prescription Converter free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Eye Prescription Converter?

Our Eye Prescription Converter uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Conversions

Eye Prescription Converter

Convert between different eye prescription notations and lens power measurements

Difficulty:intermediate

References

›Eye Prescription Conv — Wikipedia

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Eye Prescription Converter

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