I get rapid eye movement as soon as meditation starts

I saw a question about rapid eye movement when meditating, which from what I know is similar to REM sleep and the experience I had is a little bit different. As the title says I get the eye movement with in a few seconds and the only difference is the top of both my eyes hurt a little and can be distracting sometimes. Is it good that I can get this so fast? Does it mean some kind of raise in consciousness or even more concentration may come soon? I have only recently noticed this this week and I meditate about 20 minutes.