The one I have isn't great for sharpness, but I can clearly see if the trichs are clear, cloudy or amber. It's a little tube/pen looking thing. The description on the Amazon page was hilarious, as it was in very poor english and one of the suggested uses was for chicks to stick it up their cooch to do internal inspections.I've got a usb microscope for this purpose (or had) but never got it to do anything except show a blur sadly and gave up. Was a gift.