If you do end up w/ a radioshack mini-microscope (60-100X, I think this is what MrX is talking about) take small upper-leaf cuttings from a few locales on the plant, then set them on something, like a saucer, and have a look. Practice focusing on something else tiny to avoid manhandling your trichs while trying to see what's up. These scopes are a little tricky, but work well with the material removed from the source. Otherwise, the normal shaking of the human can make it really un-fun and frustrating. Had to learn this the hard way myself.