Diopter to Visual Acuity Converter
Convert eyeglass lens power in diopters (D) to an estimated visual acuity score (0.1-2.0)
Converts the diopter (D) power from your glasses or contact lens prescription into an estimated uncorrected visual acuity score.
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How to use
- Enter your diopter (D) value.
- Check the estimated visual acuity result.
FAQ
- Does diopter map exactly to visual acuity?
- No — diopter measures a lens's refractive power while visual acuity comes from reading an eye chart, so the conversion is only an approximation.
- What's the difference between minus (-) and plus (+) diopters?
- Minus diopters correct nearsightedness (distant objects look blurry), while plus diopters correct farsightedness or presbyopia (near objects look blurry).
- Can I order glasses using this result?
- No. This is an estimate only and doesn't account for astigmatism or other factors — always get an actual prescription from an eye doctor or optician before ordering glasses.