What is Perfect Vision: 66 or 2020?

People claim to have perfect eyesight if they have 2020 vision or 66 vision What does it actually mean? The sole difference is the unit of measurement in

People claim to have perfect eyesight if they have 2020 vision or 66 vision What does it actually mean? The sole difference is the unit of measurement in

666e rummy app download People claim to have perfect eyesight if they have 2020 vision or 66 vision What does it actually mean? The sole difference is the unit of measurement in

666e rummy download People claim to have perfect eyesight if they have 2020 vision or 66 vision What does it actually mean? The sole difference is the unit of measurement in