High-index lenses, how is it better than standard lenses?
1.54 Mid Index ---- 1.67 High Index Same Rx | Picked up my n… | Flickr
How Much Does it Cost to Replace Prescription Lenses? | eyeglass lens replacement and more | RX-able.com News blog
1.50 Standard vs. 1.57 Mid Index Explained | Felix Gray | Felix Gray Blog
Avoiding Facial Displacement
High index lenses | Thin high refractive lenses | All About Vision
Coke-Bottle Lenses: New Technology Do you avoid a new prescription for fear of thick glasses and a "bug-eye" … | Designer eye glasses, Eyes problems, Eye treatments