BLINKING

When looking at the symbol with eyes open, try not to blink. However don't strain. If you must blink, then ok. But try to extend the time. If tears come to your eyes, close your eyes 10-20 seconds then reopen and continue gazing at the symbol. With practice you will be able to keep your eyes open for a longer time without blinking. This is a sign of improved concentration. In Spiritual parlance this is called "Tratik"