What would be the first lens of choice for Mike, a welder with a prescription of -6.00+2.00 x 180, seeking more oxygen transmission to the cornea?

In this scenario, the first lens of choice for Mike, who has a prescription of -6.00+2.00 x 180 and is seeking more oxygen transmission to the cornea, would be the low to mid Dk GP lens.

Gas permeable (GP) lenses made with low to mid Dk materials allow for adequate oxygen transmission while still providing the necessary optical correction for Mike's prescription. GP lenses are known for their superior breathability compared to traditional soft contact lenses, and by using a low to mid Dk material, Mike can benefit from a balance between oxygen permeability and lens performance. This is particularly important for his profession as a welder, where eye health is critical due to exposure to heat and light.

Using a higher Dk lens, while potentially beneficial for oxygen transmission, could lead to other issues like increased discomfort or lens handling challenges, especially if not required based on individual needs or lifestyle considerations. Therefore, the low to mid Dk GP lens represents an optimal choice that addresses Mike’s need for more oxygen transmission while still being practical for his specific circumstances.