A novel near-field focus (NFF) lens antenna with two-dimensional (2-D) focus-scanning capability operating at THz frequencies is proposed in this paper. The NFF antenna consists of a pair of thin and ...

Laser refractive surgery has long been a life-changing option for those struggling with nearsightedness, farsightedness, or astigmatism. Millions have said goodbye to glasses and contact lenses thanks ...

LASIK eye surgery costs a couple of thousand dollars, depending on what insurance may or may not pay for it. Find cost ...