What level of surgery does cataract surgery belong to?
In general, the classification of cataract surgery is determined based on the surgical method and the complexity of the patient's condition, typically categorized as either level two or level three. The specific analysis is as follows:

For standard phacoemulsification cataract extraction, when the patient’s condition is simple—limited to lens opacity without other ocular abnormalities—the surgery is classified as level two. This type of procedure involves a small incision and well-established techniques. The cloudy lens is broken up using ultrasound energy, removed, and an intraocular lens is implanted. It carries relatively low surgical risk.
When patients have additional conditions such as glaucoma or corneal endothelial dysfunction, or require advanced techniques like femtosecond laser-assisted cataract surgery, the procedure is classified as level three. These cases involve higher surgical complexity, requiring management of coexisting eye diseases and greater technical skill and equipment sophistication; therefore, they cannot be performed according to level-two standards.
After surgery, maintain good eye hygiene, avoid getting contaminated water into the eye, and refrain from rubbing the eye or engaging in strenuous physical activity. Diet-wise, consume more fresh fruits and vegetables rich in vitamins, and reduce intake of spicy or irritating foods. Follow medical instructions for medication use, attend regular follow-up appointments at the hospital to monitor visual recovery, and seek immediate medical attention if any abnormalities such as eye pain or sudden vision loss occur.