Is there a simple conversion from vision prescriptions, like -2.0, to the easier understood measurements like 20/20? - Quora
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Optometry: Is the relationship between vision in 20/X and spherical correction (in diopters) one-to-one? - Quora
Spot VS100 Vision Screener, Conversion Chart & Instructions PDF | PDF | Visual Acuity | Electromagnetic Radiation
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MCK 3.0 | GEN 3 MCK | MICRO CONVERSION KIT | GLOCK 17 / 19 / 19x / 20 / 21 / 22 / 23 / 25 / 31 / 32 / 45 / 47 - CAA Gear Up - CAA USA
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