How Do You Convert Between Contact Lens Prescription to 20/20 Vision?

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My contact lens prescription is -7.5 in both eyes. How can you convert this into the 20/20 type number?


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3 Responses to “How Do You Convert Between Contact Lens Prescription to 20/20 Vision?”

  • eyegirl says:

    Unfortunately there is not conversion factor for the two, since seeing 20/20 is subjective and differs from person to person. But there are estimates – for a prescription as high as yours the highest letter on the chart (the big E) is probably unreadable – this means that your vision is worse than 20/400 or >20/400. Hope this helps!

  • GN says:

    laser surgery

  • sugars_that_heal says:

    Your vision will get better with a combination of glyco and phyto
    nutrients.

    info on my page

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