你即將離開本站

並前往https://cheyenneeyeclinic.com/2020-vision-explained/

What Does Having 20/20 Vision Really Mean? - Cheyenne ...

At 20 feet away, the size of the letters on a Snellen eye chart, on one of the smaller lines near the bottom, has been standardized to correspond to “normal” ...

確定！ 回上一頁

查詢 「Eye chart」的人也找了：

  1. eye chart中文
    2.
  2. Snellen chart
    3.
  3. Eye test chart download
    4.
  4. Jaeger chart
    5.
  5. Visual acuity
    6.
  6. Snellen eye chart pdf
    7.
  7. Eyesight test
    8.
  8. Snellen chart distance
    9.