Which technique uses ultrasonically driven needles for cataract surgery?

Phacoemulsification is the correct technique that utilizes ultrasonically driven needles for cataract surgery. This method involves using ultrasonic vibrations to break up the cloudy lens material (the cataract) into small pieces, which are then aspirated out of the eye. The use of ultrasonic energy allows for a minimally invasive approach, resulting in smaller incisions and quicker recovery times compared to traditional methods.

This technique has revolutionized cataract surgery by making the procedure safer and more effective, often allowing patients to experience improved visual outcomes with less postoperative discomfort. By employing an ultrasonic handpiece, the surgeon can precisely manage the fragmentation of the lens, which is a critical aspect of the surgery.

Other techniques listed do not utilize ultrasound: intracapsular extraction involves removing the entire lens with its capsule, which generally requires larger incisions; extracapsular extraction also involves removing the lens but can involve more manual manipulation without ultrasonic assistance; and retinal detachment repair pertains to procedures aimed at addressing issues associated with the retina, not the extraction of cataracts.