i received my m-20 , the instruction says that it is safe for the eyes,however the manufacturer states to not stare at the output leds for long time .
Since i ''played'' a lot with it before installing it , is it problematic or just an extra precaution .
Is it related that since i have it , my sight is a bit weaker or is it the effect of the age or squarely subjective ?
I do avoid looking at it at close range .
More light on the subject is appreciated.