The ability of a material to allow oxygen to pass through it is known as:

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Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

The ability of a material to allow oxygen to pass through it is known as:

Explanation:
Oxygen permeability is the property that describes how easily oxygen can diffuse through a material. In lens materials, this is quantified by Dk—the diffusion coefficient times the solubility of oxygen in the polymer. A higher Dk means more oxygen can reach the cornea, which helps keep the eye healthy by reducing hypoxia. Water content, refractive index, and surface roughness relate to hydration, light bending, and surface texture respectively, but they do not measure how readily gases diffuse through the material. So the term that specifically captures the material’s ability to pass oxygen is DK permeability.

Oxygen permeability is the property that describes how easily oxygen can diffuse through a material. In lens materials, this is quantified by Dk—the diffusion coefficient times the solubility of oxygen in the polymer. A higher Dk means more oxygen can reach the cornea, which helps keep the eye healthy by reducing hypoxia. Water content, refractive index, and surface roughness relate to hydration, light bending, and surface texture respectively, but they do not measure how readily gases diffuse through the material. So the term that specifically captures the material’s ability to pass oxygen is DK permeability.

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