| ENCYCLOPEDIA INDEX |
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Injury Disease Nutrition Poison Symptoms Surgery Test |
| 1 2 5 A B C D E F G H I J K L M N O P Q R S T U V W X |
Visual acuity test |
| Overview Risks Results |
| Alternative Names: |
| Eye test - acuity; Vision test - acuity |
| Normal Values: |
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Visual acuity is expressed as a fraction. The top number refers to the distance you stand from the chart. This is usually 20 feet. The bottom number indicates the distance at which a person with normal eyesight could read the same line you correctly read. For example 20/20 is considered normal. 20/40 indicates that the line you correctly read letters at 20 feet that could be read by a person with normal vision at 40 feet. |
| What abnormal results mean: |
| Abnormal results may indicate that you need corrective lenses to obtain normal vision, or may indicate an eye condition requiring further evaluation. Related topics: |
Eye |
Visual acuity test |
Normal, near, and farsightedness |
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