For study

[Mantis dude]

I remember at a sword group meeting we were discussing the fine detail the Japanese were able to create. A surgeon said he had worked with some Japanese surgeons and that they used breathing techniques and some other Zen like ways to operate instead of just using the magnification glasses. He was impressed with what they could do without the amplification. While I am sure using optics would be helpful, I can also see having the discipline to concentrate and/or focus on the object at hand would be obtainable (within reason- not saying there were killer ninja optometrists)