Dr. Patricia Bath was an ophthalmologist known for inventing the Laserphaco Probe, a tool used in cataract surgery. After obtaining a medical degree from Howard University, she attended Columbia University and was the first African American to complete an ophthalmology residency program (1973). She was the first woman to chair an ophthalmology residency program (1983). For 5 years, Bath worked on the Laserphaco Probe, a device that was able to precisely treat cataracts and even restore the sight of people who had been unable to see for 30 years. In 1988, she received a patent for the Laserphaco Probe, becoming the first African American female doctor to receive a medical patent. She continued her work in ophthalmology until 1993, when she retired from UCLA Medical Center.