What does CPS stand for in near visual acuity terminology?

• A. clinical print sensitivity
• B. corrective print size
• C. critical print size (CPS)
• D. cumulative print score

Answer: (C)

Critical print size is the smallest print size that lets a reader achieve their near-maximum reading speed. When print is smaller than this size, reading speed drops because the text is harder to recognize; as print size increases toward this threshold, reading speed rises quickly and then levels off once the reader reaches their fastest possible pace. Above this size, reading speed stays near its maximum, though some comfort or comprehension gains can still occur with larger print. This concept is used in vision rehabilitation to choose text sizes and magnification that keep reading efficient and comfortable, especially for people with low vision. The term is standard in near-visual acuity testing (such as MNREAD). The other terms you might see aren’t used to describe this threshold of reading performance.