Fiber lasers use an optical fiber doped with rare-earth elements (erbium, ytterbium, neodymium, etc.) as their optical gain source (the part that produces the laser's light). They emit high ...

Laser resurfacing can help to tighten the skin in the under-eye area and build collagen, explains Dr. Garshick, which in turn can improve the overall appearance of the eye area—including puffiness and ...