What are high-index lenses designed for?

High-index lenses are specifically engineered to reduce the thickness and weight associated with strong prescriptions. As the prescription strength increases, conventional lenses become thicker and heavier, which can create discomfort and an unappealing aesthetic. High-index materials allow for a more pronounced curvature of the lens, effectively allowing the optical power to be concentrated in a thinner profile. This results in a lighter lens that is more comfortable for the wearer while maintaining excellent optical quality.

The other options do not accurately reflect the primary purpose of high-index lenses. Enhancing color perception, improving UV protection, and providing additional glare reduction are functions that pertain more closely to specific lens treatments or coatings rather than the high-index material itself. High-index lenses primarily focus on minimizing the physical bulk of the lens for individuals with higher refractive errors.