Certified Paraoptometric (CPO) Practice Exam 2025

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In medical terminology, which prefix denotes the presence of two?

  1. Dipl

  2. Irid

  3. Corne

  4. Ophthalm

The correct answer is: Dipl

The prefix that denotes the presence of two is indeed "Dipl." This prefix is derived from the Greek word "diplous," which translates to "double." It is commonly used in medical terminology to refer to conditions or structures that are dual or paired. For instance, in the context of vision, "diplopia" refers to the condition of seeing double. Therefore, "Dipl" is correctly associated with the notion of two, marking it as the appropriate choice in this question. The other options relate to specific parts of the eye or vision but do not convey the idea of duality. For example, "Irid" pertains to the iris, "Corne" refers to the cornea, and "Ophthalm" relates to the eye in general, none of which inherently suggest a presence of two.