Certified Paraoptometric (CPO) Practice Exam 2026 - Free Paraoptometric Practice Questions and Study Guide

The suffix that indicates a person who studies or practices a specific field is indeed "-ologist." This suffix is derived from the Greek word "logos," meaning "study" or "discourse." It is commonly used in various scientific and medical terms to denote specialists or practitioners in particular areas, such as "biologist" for someone specializing in biology or "cardiologist" for a medical doctor specializing in the treatment of heart conditions.

In contrast, the other suffixes have different meanings and applications. The suffix "-osis" generally refers to a condition or disease, often indicating an abnormal or diseased state. The suffix "-pathy" signifies a disorder or disease, typically used in terms related to pathology or treatments, while "-oma" refers to a tumor or neoplasm, indicating abnormal tissue growth. Each of these suffixes conveys specific information about health or conditions but does not denote a practitioner or someone who studies a particular discipline. Thus, "-ologist" is correctly identified as the suffix associated with a person who studies or practices a specific field.