Gas Permeable Contact Lenses – Introduction Practice Test

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What is the difference between silicone/acrylate vs fluoro-silicone/acrylate?

More silicone and fluorine

Identical composition

Like S/A but less silicone and the addition of fluorine

The difference lies in the chemistry: fluoro-silicone/acrylate keeps the general silicone/acrylate backbone but includes fluorine-containing groups and reduces the overall silicone content. This means it’s similar in structure to silicone/acrylate, but some of the silicone segments are replaced with fluorinated units. The fluorine alters surface interactions and tuning of properties, giving a material that behaves like silicone/acrylate but with less silicone and the added fluorine. That’s why this option best describes the change.

No fluorine and replace