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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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nite_n_day nite_n_day
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10 years ago
Jane develops a cataract in one eye and gets a vision test. Her test result for that eye is reported as 20/400. What does this mean? Is a rating of 20/20 better or worse? 
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Would you know my name, if I saw you in heaven?

Eric Clapton
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#1
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10 years ago
A visual acuity of 20/400 means that Jane can barely see. What she sees at a 20-foot distance, others with normal vision see at 400 feet. Normal vision is 20/20 vision.
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nite_n_day Authornite_n_day
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10 years ago
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Would you know my name, if I saw you in heaven?

Eric Clapton

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