Equalizing is improving one eye instead of both eyes at the same time. It's done to reduce the diopter gap between two eyes, so that both eyes have a more similar or identical level of correction. It is recommended to do at least 2 spherical reductions before attempting to equalized. At which point you will alternate a monocular (one eye only) drop, with a binocular (both eyes) drop or better still, two binocular drops before another monocular drop. It is not recommended to do two monocular drops in a row. Be mindful to maintain your diopter ratio for both normalized and differentials. This approach should work for spherical and cylindrical reductions alike. You will likely need to incorporate some patching through this process.