How Do High-Index Lenses Differ From Usual Eyeglass Lenses?

People with higher prescriptions for eyeglasses can benefit from high-index lenses. If you do not prefer to wear glasses with thick lenses, this option is ideal for you. They are not only lightweight but also highly attractive. 

Read on to learn what high-index lenses are and how they differ from conventional eyeglass lenses.

What Are High Index Lenses?

Usually, someone with a powerful prescription would need thick lenses. It is to ensure sufficient light refracts to the eyes for clear vision. Today, high-index lenses are available, allowing people to see clearly even with thinner lenses. High-index lenses bend light more effectively than standard ones, meaning they can be thinner while still giving you better eyesight.

Conventional plastic eyeglass lenses have a refractive index of around 1.5, while standard glass lenses have a 1.52 refractive index. Lens material is considered to be high-index if it exceeds the refractive index of traditional eyeglass lenses. To determine if high-index lenses are right for you, consult your local eye doctor. 

What Are the Benefits of These Lenses?

Compared to standard lenses, plastic high-index lenses are significantly lighter. Since these lenses are thinner, they look more attractive. They are usually available in an aspheric design, making them even slimmer than traditional lenses. It prevents the bug-eye look that wearing conventional eyeglass lenses can give to people with more powerful prescriptions. Lightweight lenses can especially benefit farsighted individuals because standard lenses for this vision condition are typically heavy. 

Are you interested in getting high-index lenses for your new eyeglasses? Consult your local optometrist, Vienna Eyecare Center. We are always ready to help with your vision correction needs. Call us at (703) 938-7633 or fill out our contact form to make an appointment. We serve patients in Vienna, Reston, and Mclean, VA, and nearby communities.