If you have cataracts in both eyes, surgery typically is performed on one eye, and then a few days or a few weeks later, it’s performed on the second eye. This approach allows the first eye to recover and your vision in that eye to stabilize before surgery is performed on the fellow eye. That said, modern cataract surgery is very safe and effective, and the rate of cataract complications is very low. This has led to some surgeons to begin offering simultaneous (or sequential) bilateral cataract surgery (SBCS) — in other words, cataract surgery performed on both eyes on the same day.