A permanent ink marker making a big slash across the container for one of your eye’s contacts ahead of time makes things easier to find. Just look for the big line across the container and you know that it’s your left or right eye, and the other isn’t. The important thing is to always do the same eye between orders, so you don’t get used to the line always being the left and all of a sudden it changes to right from one order to another.
A permanent ink marker making a big slash across the container for one of your eye’s contacts ahead of time makes things easier to find. Just look for the big line across the container and you know that it’s your left or right eye, and the other isn’t. The important thing is to always do the same eye between orders, so you don’t get used to the line always being the left and all of a sudden it changes to right from one order to another.
Or dab of nail polish on the lid was my first thought.