Physics · Human Eye and Colorful World
In standard medical terms, visual impairment is often defined as a best-corrected visual acuity of worse than either:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120/50 or 20/80
- 220/70 or 20/90
- 320/40 or 20/60✓
- 420/20 or 20/30
Correct answer
20/40 or 20/60
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