Instructions & Precautions
Testing Distance
Stand 2 meters away from the screen during the test.
Testing Steps
- Start with the largest E-shaped optotype, and identify the opening direction of each E (Up, Down, Left, Right) in sequence.
- Record the smallest vision value you can recognize correctly.
- Tap the button in the top-right corner to randomize the rotation of E shapes, to avoid biased test results caused by memorization.
Testing Environment
- Perform the test in a well-lit space.
- Avoid direct sunlight or screen glare that may obstruct your vision.
- If you wear eyeglasses or contact lenses, keep them on to test your corrected vision.
Result Evaluation
This eye chart is for reference only. Consult a professional ophthalmologist for an accurate eye assessment.






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