What is the primary fluid in the anterior chamber of the eye?

What is the primary fluid in the anterior chamber of the eye?

• A. Vitreous humor.
• B. Lacrimal fluid.
• C. Blood plasma.
• D. Aqueous humor.

Answer: (D)

The fluid in the anterior chamber is aqueous humor. This clear fluid is produced by the ciliary body, flows from the posterior chamber through the pupil into the anterior chamber, and drains mainly via the trabecular meshwork into Schlemm's canal. Aqueous humor nourishes the avascular structures of the cornea and lens and helps maintain intraocular pressure, which is important for eye shape and proper focusing. It differs from other eye fluids: the vitreous humor fills the large posterior chamber behind the lens and is a gel-like substance; lacrimal fluid is the tear film on the eye’s surface; blood plasma is the liquid part of blood, not the primary fluid in the anterior chamber.

The fluid in the anterior chamber is aqueous humor. This clear fluid is produced by the ciliary body, flows from the posterior chamber through the pupil into the anterior chamber, and drains mainly via the trabecular meshwork into Schlemm's canal. Aqueous humor nourishes the avascular structures of the cornea and lens and helps maintain intraocular pressure, which is important for eye shape and proper focusing. It differs from other eye fluids: the vitreous humor fills the large posterior chamber behind the lens and is a gel-like substance; lacrimal fluid is the tear film on the eye’s surface; blood plasma is the liquid part of blood, not the primary fluid in the anterior chamber.