Jay is right that the 6/12 and 6/21-2 (though I think this may be 6/24 -2) is your corrected vision. The left vision means that you only just get the 6/24 line which is the third line down on an eye chart.
Both eyes show astigmatism - more in your left than your right and basically you are being referred because they cannot get your vision up to normal standards with glasses - which is typical for Keratoconus.
Distorted mires mean that when they measure your corneal curvature, the images on the machine look distorted - this again is typical of keratoconus as the uneven surface of your eye distorts the images reflected back into the machine.
Lens discomfort - everyone feels initial discomfort with rigid lenses but this mostly wears off as your eyelids adapt.
The main thing here is that you are finally doing something about it
The contacts will help you see much better than glasses can!!
PLease ask if you have any more queries!
Lynn