What is the approximate pH of aqueous humor in the eye?

The approximate pH of aqueous humor in the eye is around 7.4, which is slightly alkaline compared to neutral pH (7.0). This pH level is essential for maintaining the optimal biochemical environment for various ocular functions, including metabolic processes and the activity of enzymes within the eye. The slightly alkaline pH helps ensure that the environment is conducive for nutrient transport to the avascular structures of the eye, such as the lens and cornea, and it also helps in maintaining the stability of the aqueous humor itself.

In terms of cellular health and function, a pH of 7.4 supports protein structure and functionality, which is critical for maintaining clarity and proper function within the eye. The body achieves this pH balance in the aqueous humor through various mechanisms, including the production of bicarbonate ions that help buffer any changes that may occur.

Understanding the pH of aqueous humor is crucial for appreciating how it relates to eye disorders, as deviations can affect not only the health of the ocular tissues but also the overall homeostasis of the anterior segment of the eye.