percentage of study population developing retinopathy during a period of time
percentage of study population displaying retinopathy at a point in time
The number of individuals in a study population which display, i.e., are manifesting symptoms of or have been diagnosed with, retinopathy at a certain point in time compared to the total number of individuals in the study population, expressed as a percentage. Retinopathy is a noninflammatory degenerative disease of the retina.