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Product Description
The E chart is a standard tool used to assess visual acuity. The size of each optotype is meticulously designed following the one-minute visual angle principle, guaranteeing precise measurements for accurate vision testing. This product ships from the United States.
- Material and Durability: This vision chart is constructed from thick and robust PVC material, ensuring its toughness and waterproof properties. The matte finish effectively eliminates glare and reflections, creating an optimal testing environment for precise results.
- Accurate Size and Design: Each optotype on the E chart is meticulously designed according to the one-minute visual angle principle, guaranteeing precise measurements for accurate vision assessments. The incorporation of red and green color bars facilitates the evaluation of red-green color deficiency.
- Convenient Testing Tools: It comes equipped with an eye occluder and a pointer, enabling individual testing of the left and right eye. As the vision chart is rolled up for shipping, we recommend using our double-sided adhesive to affix it to the wall for convenient use.
- Practical Mounting Recommendations: To ensure accurate testing, avoid direct sunlight or excessively dim areas, place it on a flat surface, and keep it vertical when mounting the visual acuity chart. Typically, for adults, the "20/20" line should be at eye level, but adjustments may be necessary for children. During the test, the subject stands 20 feet away from the chart.
- Versatile Applications: This eye chart offers great versatility and is suitable for a wide range of settings. It plays a vital role in educational institutions, eye clinics, hospitals, and other medical facilities where vision testing is essential.
Product Details
PVC Material: Constructed from strengthened PVC material, it boasts high durability and tear resistance. The surface of the vision chart stays remarkably clear, devoid of any glare or reflection.
Waterproof Functionality: The vision chart is designed with waterproof features, enhancing its durability and reliability in various environments.
Secure Affixing with Double-Sided Tape: To ensure stability and prevent curling, utilize double-sided tape to firmly fix the four corners of the chart during mounting.
Simple Setup, Effortless Testing: Simply fix the eye chart with double-sided tape at all four corners, and then use a pointer and an eye patch to measure the vision for each eye separately.
FAQ
Are You Ready for Your Vision Test?
1. Choose a quiet, well-lit area with no obstructions in front of the eye chart.
2. Attach the chart to the wall using double-sided tapes, making sure that the 20/20 line is at eye level.
3. The standard testing distance is 20 feet (6 meters).
What Are the Steps Involved in Vision Testing?
1. Stand 20 feet away from the chart.
2. Cover the left eye first, then the right eye separately.
3. Begin reading from the top of the chart, moving downward.
4. Record the clearest line that can be seen for each eye separately.
Who Can Use This Vision Chart for Testing?
This chart is suitable for individuals who are 5 years of age and older to assess visual acuity. For children under 5 years old, their eyes are still in development, and they may only be able to read up to the 20/40 or 20/50 lines.
What Do the Results Indicate on This Chart?
If you can read the letters on every line from 20/20 and upwards, your prescription is 0D, indicating good vision. If you can only read from 20/40 and upwards, your prescription may be -1.00D, suggesting a need for correction. However, these results may not be precise, and it's recommended to visit a professional optometrist for a prescription.
How Does the Chart Help with Color Blindness Testing?
The chart includes red and green color bars, which help assess red-green color blindness. This feature assists in identifying individuals who may have difficulty distinguishing between these colors.
Warning: The four corners of the vision chart have sharp edges, please be cautious to avoid any potential cuts or injuries.
All Options
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| MODEL | JFVAC00001 | JFVAC00002 | JFVAC00003 | JFVAC00005 | JFVAC00006 | JFVAC00007 |
| Standard Testing Distance | 20 feet | 20 feet | 20 feet | 20 feet | 10 feet | 10 feet |
| Waterproof | √ | √ | √ | √ | √ | √ |
| Eye Occluder for Vision Test | √ | √ | X | X | X | X |
| Pointer for Vision Test | √ | √ | X | X | X | X |
| Double-Sided Tapes | √ | √ | √ | √ | √ | √ |