VisionPlus India

Additionally, these lenses often feature aspheric designs. Unlike conventional spherical lenses that have a uniform curvature, aspheric lenses are flatter and slimmer, which further reduces distortion and bulk while improving peripheral vision. CHOOSING THE RIGHT HIGH INDEX LENS Selecting the right high-index lens depends on several factors, including: • Prescription Strength: The stronger the prescription, the higher the refractive index required to achieve a noticeable reduction in thickness. • Frame Style: High-index lenses complement various frame styles, but the choice of frame can influence lens thickness. For example, rimless or semi-rimless frames might benefit from slightly lower indices to maintain durability. • Lens Coatings: High- index lenses typically require anti-reflective (AR) coatings to minimise glare, as the denser material reflects more light than standard lenses. • Cost Considerations: High- index lenses are generally more expensive than standard options. However, the investment is often justified by their improved aesthetics, comfort, and versatility. ARE HIGH INDEX GLASSES WORTH THE INVESTMENT? For many eyewear users, the answer is a resounding yes. High-index glasses offer a combination of functionality and fashion that can enhance both vision and self-esteem. As technology continues to evolve, high-index lenses are likely to become even thinner, lighter and more versatile. Innovations in material science and manufacturing techniques promise to enhance their optical quality and accessibility. For opticians, staying informed about these advancements is crucial to offering the best solutions to their clients. . Feature Standard Lenses High Index Lenses Thickness Thick for strong prescriptions Thin even for strong prescriptions Weight Heavier Lighter Frame Compatibility Limited Broad Cost Lower Higher Aesthetic Appeal Moderate High HIGH INDEX LENSES VS. STANDARD LENSES TO BETTER UNDERSTAND THE VALUE OF HIGH-INDEX LENSES, CONSIDER THIS COMPARISON water, and resist scratches, further improving the visual experience. UNDERSTANDING THE TECHNOLOGY BEHIND HIGH INDEX LENSES The secret to high-index lenses lies in their material composition. Standard lenses are typically made from CR-39 plastic or polycarbonate, materials with moderate refractive indices. High-index lenses, however, utilise advanced polymers or glass materials with higher density and refractive capabilities. 48 VISION PLUS INDIA EDITION