For successful contact lens wear, what is the minimum percentage of oxygen (EOP) that must reach the cornea?

For successful contact lens wear, what is the minimum percentage of oxygen (EOP) that must reach the cornea?

• A. 3%
• B. 5%
• C. 10%
• D. 7%

Answer: (D)

For successful contact lens wear, it is essential for the cornea to receive an adequate amount of oxygen to maintain its health and function. Oxygen transmission through contact lenses is measured by the equivalent oxygen percentage (EOP) reaching the cornea. The minimum percentage of oxygen that must reach the cornea is set at around 7% for optimal corneal health. This level of oxygen transmission helps prevent hypoxia, which can lead to complications such as corneal swelling, discomfort, and increased risk of infection. A percentage lower than 7% may not provide sufficient oxygen, potentially compromising corneal epithelial cell function and overall eye health. Various factors can influence this requirement, such as wear time, the lens material, and the patient's unique ocular physiology. Thus, achieving this minimum threshold is critical for the safe and comfortable use of contact lenses.

For successful contact lens wear, it is essential for the cornea to receive an adequate amount of oxygen to maintain its health and function. Oxygen transmission through contact lenses is measured by the equivalent oxygen percentage (EOP) reaching the cornea.

The minimum percentage of oxygen that must reach the cornea is set at around 7% for optimal corneal health. This level of oxygen transmission helps prevent hypoxia, which can lead to complications such as corneal swelling, discomfort, and increased risk of infection.

A percentage lower than 7% may not provide sufficient oxygen, potentially compromising corneal epithelial cell function and overall eye health. Various factors can influence this requirement, such as wear time, the lens material, and the patient's unique ocular physiology. Thus, achieving this minimum threshold is critical for the safe and comfortable use of contact lenses.