The prefix "ir-" is associated with which part of the eye?

The prefix "ir-" is indeed associated with the iris, which is the colored part of the eye that controls the size of the pupil and the amount of light that enters the eye. The term "iris" originates from the Greek word for rainbow, reflecting its various colors. Understanding prefixes can provide insights into anatomical structures, as "ir-" specifically pertains to the iris; this connection helps in identifying related medical terms and conditions associated with this part of the eye, such as iritis, which refers to inflammation of the iris. Other options like pupil, cornea, or lens do not utilize the "ir-" prefix, making them unrelated to the correct answer.