Biology · Human Health and Diseases
According to standard clinical definitions, blindness refers to a visual acuity of:
- 120/100 in the better eye after correction
- 220/60 in the better eye after correction
- 320/20 in the better eye after correction
- 420/200 or worse in the better eye after correction✓
Correct answer
20/200 or worse in the better eye after correction
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