Phacoemulsification is the most commonly used technique for cataract removal. It treats cataracts by breaking up the cloudy natural lens using ultrasound energy and replacing it with a clear artificial intraocular lens. This procedure restores vision that has been impaired by lens clouding due to aging or other factors. Before surgery, patients undergo a comprehensive eye evaluation, including visual acuity testing, eye measurements, and imaging to assess lens opacity and eye anatomy. These measurements are used to select the most appropriate intraocular lens based on visual needs and lifestyle goals. During the procedure, a very small incision is made in the cornea. Ultrasound energy is used to gently fragment the cloudy lens, which is then removed and replaced with an artificial lens. The incision is typically self-sealing and does not require stitches. The procedure is performed under local anesthesia and is painless. Phacoemulsification offers rapid visual recovery, minimal discomfort, and excellent long-term outcomes, making it the standard of care for cataract surgery worldwide.