Bests & Worsts Reviews from Amazon

These are great little loupes, and you'll be amazed as to how dang bright the LEDs included are. The issue stems from the fact that these are mounted (Inappropriately) on a frame for glasses. Mounting these on this frame gives the illusion that they're stereoscopic (meaning: you can use both eyes at once), but this is wildly inaccurate. I can GUARANTEE that you'll never use more than one eye at any given time. After using these for about 10 minutes straight, I had severe eye fatigue. Also if you wear these on your face while looking at an item, that item will be touching your nose. Pros: -Good quality for price -Super Bright LEDs -Strong magnification -You get 2 loupes Cons: -Not stereoscopic -Extremely short focal range -Not for long periods of use So overall these loupes are great if you just remove them from their mounting and use them by hand (Like I'm doing), but the fame they're mounted on proves to be just a useless gimmick.