Cataract surgery is less invasive, with an incision of only 2-3mm, but it is still an inner eye surgery. Patients should try to avoid foods with high protein content such as seafood, beef and mutton, as well as excessive consumption of large amounts of tonic products and foods that are easily inflammable. Cataract surgery is a localized surgery on the eye and has no effect on the whole body, so a light diet is sufficient after surgery.