The first African American female doctor, who invented Cataract treatment was _____ ?

1) Dr.May Edward Chinn
2) Dr.Roselyn Payne Epps
3) Dr.Sophia B. Jones
4) Dr. Patricia Bath

Explanation:
Dr. Patricia Bath, pioneering ophthalmologist the first African American female doctor to invented a more precise treatment for cataracts died at the age of 76 due to cancer at University of California San Francisco medical center. She was from Harlem in New York City. Bath has five U.S. patents. She also authored more than 100 papers.