What is a primary reason for choosing a higher DK fluorocarbon material over soft hydrogel?

Choosing a higher DK fluorocarbon material over soft hydrogel primarily relates to the enhanced oxygen permeability these materials offer. DK is a measure of a material's ability to transmit oxygen, which is crucial for maintaining corneal health during contact lens wear. Higher DK fluorocarbon materials allow significantly more oxygen to reach the cornea compared to traditional soft hydrogels.

This increased oxygen transmission helps to reduce the risk of hypoxia-related complications, such as corneal swelling and discomfort. Additionally, even though higher DK materials can sometimes be made more durable and may require less frequent replacement, the primary advantage lies in their capability to support ocular health by providing adequate oxygen, thereby fostering more extended and comfortable wear.

Options regarding blink rates, economics, and oxygen reduction do not accurately capture the primary reasons for selecting higher DK materials. A greater focus on oxygen permeability is what makes these materials preferable for contact lens wear.