EYES
Your eyes are fine.
If you can read the 6/6 line (6 metres or 20 feet-hence 20/20 vision) then that is fine for your licence.
The fact that you can read the line below that means that you have better than 20/20 vision.
It has nothing to do with long or short sight. If you have long or short sight you need specs to adjust the focal point on you retina so you can see with normal vision and read the eye chart.
Hope this helps.