Which fluid provides nutrition to the lens?

Which fluid provides nutrition to the lens?

• A. Vitreous humor
• B. Ciliary fluid
• C. Aqueous humor
• D. Lacrimal fluid

Answer: (C)

The lens is avascular, so it relies on surrounding fluids for nourishment. Aqueous humor, produced by the ciliary body, bathes the lens in nutrients as it flows from the posterior chamber through the pupil into the anterior chamber. This fluid carries essential nutrients like glucose and ions to the lens tissues and helps remove metabolic wastes, supporting the growth and function of the lens fibers. The vitreous humor sits behind the lens and mainly supports the retina; it’s not a primary nutrient source for the lens. Lacrimal fluid (tears) nourishes the cornea and conjunctiva, not the lens. Therefore, the fluid that provides nutrition to the lens is aqueous humor.

The lens is avascular, so it relies on surrounding fluids for nourishment. Aqueous humor, produced by the ciliary body, bathes the lens in nutrients as it flows from the posterior chamber through the pupil into the anterior chamber. This fluid carries essential nutrients like glucose and ions to the lens tissues and helps remove metabolic wastes, supporting the growth and function of the lens fibers. The vitreous humor sits behind the lens and mainly supports the retina; it’s not a primary nutrient source for the lens. Lacrimal fluid (tears) nourishes the cornea and conjunctiva, not the lens. Therefore, the fluid that provides nutrition to the lens is aqueous humor.