Does the amount of hyaluronic acid in the vitreous increase or decrease with age?

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Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Does the amount of hyaluronic acid in the vitreous increase or decrease with age?

Explanation:
The amount of hyaluronic acid in the vitreous tends to decrease with age. Hyaluronic acid helps bind water and, together with the collagen network, maintains the gel-like consistency of the vitreous. As we age, the vitreous undergoes syneresis, where the collagen fibers coalesce and water pockets form, leading to liquefaction. This aging process is accompanied by reduced synthesis and turnover of hyaluronic acid, so there is less HA to bind water and help maintain the gel. The net effect is a decrease in HA content, which contributes to the age-related liquefaction and may promote posterior vitreous detachment.

The amount of hyaluronic acid in the vitreous tends to decrease with age. Hyaluronic acid helps bind water and, together with the collagen network, maintains the gel-like consistency of the vitreous. As we age, the vitreous undergoes syneresis, where the collagen fibers coalesce and water pockets form, leading to liquefaction. This aging process is accompanied by reduced synthesis and turnover of hyaluronic acid, so there is less HA to bind water and help maintain the gel. The net effect is a decrease in HA content, which contributes to the age-related liquefaction and may promote posterior vitreous detachment.

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