The risk factors for primary open-angle glaucoma include elevated intraocular pressure, hypertension, the use of cortico-steroids, and:

A. conjunctivitis
B. white race
C. young age
D. diabetes

d
Rationale: The list of risk factors for primary open-angle glaucoma include elevated intraocular pressure, older age, family history, black race, diabetes, hypertension, myopia, and use of corticosteroids.