Thelazia gulosa. (Photo courtesy CDC)

Thelazia gulosa mid body with prominent cuticular striations, intestinal tube, and ovaries containing spirurid eggs. (Photo courtesy CDC)

Thelazia gulosa, whole adult female (x40 magnification, cleared). (Photo courtesy CDC)

Thelazia gulosa in situ on the surface of the patient’s conjunctiva. (OHSU)

Thelazia life cycle. (CDC.gov/dpdx)

Erin Bonura, M.D., assistant professor of medicine (infectious disease) at the OHSU School of Medicine. (OHSU)

Abby Beckley, 28, of Oregon, was the first known case of human infected with "Thelazia gulosa", a cattle eyeworm species. (Photos courtesy Abby Beckley)

Abby Beckley, 28, of Oregon, was the first known case of human infected with "Thelazia gulosa", a cattle eyeworm species. (Photos courtesy Abby Beckley)

Abby Beckley, 28, of Oregon, was the first known case of human infected with "Thelazia gulosa", a cattle eyeworm species. (Photos courtesy Abby Beckley)

Ryan Olson, Ph.D., associate professor in OHSU’s Oregon Institute of Occupational Health Sciences and the OHSU-PSU School of Public Health. (OHSU)