Focus on fit and comfort (frame size, bridge width, temple length), ensure your prescription can be accurately supplied, and check available lens options and coatings. Also review warranty and post-purchase adjustments.

Look at frame size and shape for a good facial fit, material (plastic vs metal) for weight and durability, and lens features (single-vision vs progressive, lens index). Consider coatings (anti-scratch, anti-reflective) and whether the price includes lenses or requires upgrades.

For computer use, prioritize anti-reflective coatings and blue-light filtering; for outdoors, consider photochromic or tinted lenses; for active wear, choose durable frames with secure hinges and good fit.

Choose lighter frame materials and look for thinner lenses with a higher-index option to reduce edge thickness. Verify frame size fits your face and ensure the retailer offers quality adjustments and a clear return policy within the budget.