Currently, Shields and her husband Dr. Jerry A. Shields head up the oncology department at the Wills Eye Hospital. Located in Philadelphia, the Wills Eye Hospital sees at least 50% of the 300 children diagnosed with retinoblastoma each year and at least 1/3 of the adults diagnosed with ocular melanoma in the USA. She was voted by her peers to be in the 2014 and 2016 Ophthalmology Top 100 Power List, which comprises a list of the top 100 most influential people in ophthalmology in the world.
Dr. Shields is currently leading the oncology department at Wills Eye Hospital in Philadelphia, where they treat a significant portion of children and adults with retinoblastoma and ocular melanoma respectively. She was recognized as one of the top 100 ophthalmologists globally by her peers in 2014 and 2016.