Aqueous Humor

**Definition:** The clear, watery fluid which fills the anterior and posterior chambers of the eye. It has a refractive index lower than the crystalline lens, which it surrounds, and is involved in the metabolism of the cornea and the crystalline lens. (Cline et al., Dictionary of Visual Science, 4th ed, p319)

**Tree numbers:** - A09.371.060.067.070 - A12.207.270.040

**Synonyms:** - Intraocular Fluid