High index glass is a type of optical glass designed to bend light more efficiently than standard glass. This property allows for thinner and lighter lenses, making them a popular choice for eyeglasses, especially for those with strong prescriptions. The higher refractive index means that less material is needed to achieve the same vision correction. Due to its lightweight nature, high index glass enhances comfort for wearers and reduces the overall bulk of eyewear. It is often used in prescription glasses and sunglasses, providing both aesthetic appeal and improved functionality for individuals seeking effective vision solutions.