Final answer:
High-index lenses are designed with materials that allow them to be made thinner, providing a slimmer profile for higher prescriptions while still effectively correcting vision.
Step-by-step explanation:
The type of lenses that offer a slimmer profile for higher prescriptions are High-index lenses. Unlike other types of lenses such as polarized lenses, which reduce glare, or photochromic lenses, which darken in the presence of UV light and become clear indoors, high-index lenses are designed with materials that have a higher refractive index. This means they can be made thinner while still effectively bending light to correct vision, making them particularly beneficial for strong prescriptions, which typically require thicker lenses. The slim profile of high-index lenses not only has aesthetic benefits, enabling sleeker and more attractive glasses, but can also improve comfort as thinner lenses are lighter in weight.