Certified Paraoptometric (CPO) Practice Exam 2025

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Where is the choroid located within the eye?

  1. Between the iris and retina

  2. In front of the lens

  3. Sandwiched between the sclera and the retina

  4. Behind the cornea

The correct answer is: Sandwiched between the sclera and the retina

The choroid is a critical structure of the eye, located between the sclera (the white outer layer of the eyeball) and the retina (the light-sensitive tissue at the back of the eye). This positioning enables the choroid to play a vital role in nutrition and support for the retina, as it is rich in blood vessels that supply essential nutrients and oxygen. The choroid also contains pigment that helps absorb excess light, preventing reflection within the eye that could impair vision. Understanding this anatomical arrangement is crucial for professionals in the field, as it highlights the choroid's significance in maintaining a healthy visual system and its relation to other ocular structures.

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