Explainer talk:The Eyesight Improvement Equation

essential?

"Differentials are essential for successful vision improvement", Jargon aside. It's not essential for those with myopia under -1.5, as they typically don't require them. Viceroy Sam (talk) 13:08, 22 October 2020 (UTC)

@Viceroy Sam: Try this: [1] -NottNott (talk) 11:16, 24 October 2020 (UTC)