What is meant by 20/70 vision?
Understand the Problem
The question is asking for an explanation of what '20/70 vision' means in terms of visual acuity. It pertains to how vision strength is measured and what it indicates about sight capabilities.
Answer
20/70 vision means a person can see at 20 feet what a person with normal vision can see at 70 feet.
The final answer is: 20/70 vision means a person can see at 20 feet what a person with normal vision can see at 70 feet.
Answer for screen readers
The final answer is: 20/70 vision means a person can see at 20 feet what a person with normal vision can see at 70 feet.
More Information
20/70 vision is a measure of visual acuity where the numerator indicates the test distance (20 feet), and the denominator indicates the distance at which a person with normal vision can see the same object clearly.
Tips
A common mistake is misunderstanding the numerator and the denominator in the visual acuity ratio; remember that the higher the denominator, the poorer the vision.
Sources
- Vision Impairment Information - Pitt Ophthalmology - ophthalmology.pitt.edu
- What Is Low Vision? | ParkSlopeEye.com - parkslopeeye.com
- Low Vision and Legal Blindness Terms and Descriptions - afb.org
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