SAN FRANCISCO (AP) — Dr. Patricia Bath, a pioneering ophthalmologist who became the first African American female doctor to receive a medical patent after she invented a more precise treatment of cataracts, has died. She was 76.

Bath died on May 30 from complications of cancer at a University of California San Francisco medical center, her daughter, Dr. Eraka Bath, said Monday.

Bath was born in Harlem in New York City. Her mother was a domestic worker and her father worked on the city subway system. Bath won a National Science Foundation scholarship while a teenager. She graduated from Howard University's medical school and interned in New York.

Bath moved to California where she became the first African American surgeon at the University of California, Los Angeles Medical Center and the first woman ophthalmologist on the faculty of UCLA's Jules Stein Eye Institute. She also co-founded an ophthalmology residency program and in 1983, Bath was appointed Chair of the King-Drew-UCLA Ophthalmology Residency Program, becoming the first woman in the United States to head such a residency program.

"I had a few obstacles but I had to shake it off," Bath told "Good Morning America" last year. "Hater-ation, segregation, racism, that's the noise you have to ignore that and keep your eyes focused on the prize, it's just like Dr. Martin Luther King said, so that's what I did."

Bath was concerned by epidemic levels of blindness from preventable causes among under-served, often minority communities in the U.S. and also in poor countries overseas. In the 1970s she co-founded the American Institute for the Prevention of Blindness, a nonprofit that declares "eyesight is a basic human right."

Bath also pioneered a new medical discipline, community ophthalmology, to deal with such preventable blindness through education, public health outreach and local provision of medical services.

Her daughter remembered being taken along on her mother's missions to Nigeria and Pakistan.

"I remember taking time off of fifth grade to do so," she said.

In the 1980s, Bath joined in researching the use of lasers in ophthalmology. In 1988 she patented the Laserphaco Probe, short for "laser photoablative cataract surgery." It uses a laser to dissolve cataracts. The device offered less painful cataract treatment and restored the sight of patients who had been blind for decades.

Bath held five U.S. patents. She also authored more than 100 papers.

But her daughter remembered her as unassuming.

"She wore sneakers and jeans ... she was casual and not pretentious," Eraka Bath said. "She came from humble roots."

Even so, she stood out in a field where there still are relatively few African Americans or women.

"So even if you're not seeking to be a role model, you are one," her daughter said.

In 1993, Bath retired from UCLA but continued to lecture and travel worldwide. She also had plans to mentor medical students and get younger people interested in science and technology.

"She almost had a second career as a humanitarian," her daughter said. "She just was very vigorous and tireless."

In addition to her daughter, Bath is survived by a granddaughter, Noa Raphaelle Bath Fortuit of Los Angeles, and a brother, Rupert Bath of New York.

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This story's headline has been corrected to identify the deceased as Dr. Patricia Bath, not Dr. Patricia Smith. This story has also been corrected to show that Bath patented the Laserphaco Probe, not the Laser Phaco device.

Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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