ABO NOCE Practice Test

How does the aqueous humor contribute to eye health?

1. It prevents lens opacification

2. It nourishes the retina and maintains intraocular pressure

3. It enhances light refraction

4. It facilitates color perception

The correct answer is: It nourishes the retina and maintains intraocular pressure

The aqueous humor is a transparent, watery fluid found in the anterior chamber of the eye, playing a crucial role in maintaining overall eye health. One of its primary functions is to nourish the avascular structures within the eye, such as the lens and cornea, supplying them with essential nutrients and oxygen. This nourishment is vital for maintaining the clarity of the lens and cornea, which are instrumental in focusing light onto the retina. Additionally, the aqueous humor helps to regulate intraocular pressure. This pressure is essential for the structural integrity of the eye and proper functioning. When the balance of production and drainage of aqueous humor is disrupted, it can lead to conditions such as glaucoma, which can impair vision and damage the optic nerve. Therefore, maintaining healthy levels of aqueous humor is crucial for both nutrition and pressure regulation in the eye.