Define your needs first: protect your eyes from UV, pick a lens tint and polarization that fits your activities, and choose a frame size and style that suits your face shape and comfort.

UV protection (look for UV400), lens type (polarized if glare is a concern), frame fit (size, bridge, temples), and build quality/materials.

Consider the intended use (driving, outdoor activities, or fashion), lens coatings (scratch resistance, smudge resistance), and easy maintenance or case options.

For driving or outdoor sports, choose polarized lenses and a secure fit; for fashion-forward looks, choose a frame shape that flatters your face and matches your wardrobe, while ensuring comfort.