Certified Paraoptometric Practice Test

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Prepare for the Certified Paraoptometric Test! Study using flashcards, multiple choice questions, and detailed explanations. Get ready for your exam and boost your optometric skills!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the thick jelly-like substance that fills the eyeball behind the lens?

Vitreous humor
Crystalline Lens
Bulbar conjunctiva
Palpebral conjunctiva

The correct answer is: Vitreous humor

The thick jelly-like substance that fills the eyeball behind the lens is called the vitreous humor, which is a clear gel made up of mostly water and some collagen fibers. It is responsible for maintaining the overall shape of the eyeball and also helps to transmit light to the retina for vision. Option B, the crystalline lens, is located in the front of the eye and helps to focus light onto the retina. Option C, the bulbar conjunctiva, is a thin layer of tissue that covers the white part of the eye and the inner surface of the eyelids. It protects the eye and keeps it moist. Option D, the palpebral conjunctiva, is a thin membrane that lines the inner surface of the eyelids and also helps to keep the eye moist. Therefore, options B, C, and D are all incorrect as they do not refer to the thick jelly-like substance that fills the eyeball behind the lens.