SAN FRANCISCO — IOL power accuracy “is not always possible” in cataract surgery candidates who have had previous refractive surgery, according to an experienced refractive surgeon. Warren E. Hill, MD, ...

When patients previously implanted with phakic lenses undergo cataract surgery, IOL power calculation is easy and straightforward, according to a Belgian surgeon. “It’s easy to understand that a lot ...

Researchers at Beijing University of Chemical Technology (BUCT) and BOE Technology Group Co., Ltd. (BOE) have developed a novel type of transparent organic–inorganic hybrid photoresist with highly ...

Researchers in Korea have created a new metamaterial with the most extreme positive index of refraction yet – a whopping 38.6. The metamaterial operates at terahertz frequencies and the team believes ...