Which suffix signifies a process of "visual examination"?

The suffix that signifies a process of "visual examination" is -scopy. This suffix originates from the Greek word "skopein," which means "to look" or "to examine." When attached to the root of a word, it indicates the act of examining or observing an organ or structure visually using an instrument.

For example, in the term "endoscopy," it refers to the process of visually examining the interior of a hollow organ or cavity within the body using an endoscope. This aligns perfectly with the concept of a visual examination, demonstrating how -scopy is specifically associated with observation and inspection rather than other medical actions or processes.

In contrast, the other suffixes pertain to different medical concepts. -therapy refers to treatment of a disease, -stomy signifies the creation of an opening, and -tomy indicates cutting into or incision of a body part. These do not indicate a visual examination but rather different procedural aspects in medical terminology.