Certified Paraoptometric (CPO) Practice Exam

The term '20/20' is used to describe normal visual acuity or clarity of vision at a distance of 20 feet. Specifically, it indicates that a person can see at 20 feet what an individual with normal vision can also see at the same distance. This standard serves as a benchmark for visual acuity assessments conducted during eye examinations. When a person's vision is measured as 20/20, it means that they have a standard level of eyesight and do not require corrective lenses for distance vision under typical conditions. Essentially, '20/20' vision is viewed as the norm, and individuals with this level of acuity are generally considered to have visual clarity that meets the average population's capabilities. Other visual acuity measurements like 20/40 or 20/60 indicate a decrease in visual acuity, meaning greater dependence on corrective lenses for optimal vision.