Nanodropper
The Nanodropper is the only FDA-listed, volume-reducing adaptor for eyedrop bottles. By simply twisting the Nanodropper onto a compatible bottle, you can reduce the drop-size by over 60%. Smaller drops have been shown to reduce waste, cost, and side effects.
https://www.drlunaxu.com/nanodropper/
![image](https://buzzbiipull.b-cdn.net/upload/photos/2023/05/KQJZ1Os1JZSIBi2OEzzk_10_bd41a173e8a31021e639f55eceb5c945_image.png)