Astounded by perfect vision: What does 20/20 really mean?
1 year ago
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[{"text":"In this video (#SHORTS) Dr. Laby explains what \"20/20\" means and what normal vision is and why it is considered \"perfect\" vision."}]
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{"title":"Astounded by perfect vision: What does 20/20 really mean? by Sports Vision by Dr. Laby 129 views 1 year ago 59 seconds - play Short","duration":"59 seconds"}