Brian K.:
So, I've started doing a kasina practice again in my meditation and I have a question or two about developing the image after I close my eyes. First off - in the past I've always used a candle for kasina practice. I'm kind of wanting to use a symbol, something that is a little more engaging to me (like a cross or something). I know that I should stare at the image, then after some time, close my eyes and focus on the after-image. Now, when I used a picture of a cross I didn't get that distinct after-image. With a flame, it's actually a physical image I can SEE, burned into my retina, not imagine. Understand what I'm saying? So, my question is... am I actually supposed to SEE the image or after sometime should I close my eyes and call the image up, in other words, visualize it, and concentrate on that? Thanks.
With the candle, it effectively is actually burned into your retina
http://en.wikipedia.org/wiki/Afterimage
I would say, there is not right or wrong way. So I have been doing kasina practice recently, and some instructions I have read just involve starring at it without shutting your eyes. Some instructions say to shut your eyes and try to imagine it. So play around! Everyone is different - the main point is an aid to concentration, and if trying to visualise the image helps you concentrate (and cut down thoughts, if that is your goal), then go ferrit!