LOS ANGELES — There are easy steps practitioners can take to prevent striae and slipped flaps during LASIK, as well as in managing striae. Macrostriae are microslips. Macrostriae are typically ...

LASIK is a treatment for the correction of myopia, hyperopia and astigmatism. It has advantages over photorefractive keratectomy, such as less postoperative pain and more rapid recovery, but ...

Flapping-wing ornithopter drones may potentially be more agile and energy-efficient than their fixed-wing counterparts, but most of them still can't loiter in one spot. A new model addresses that ...

Birds don't always fly over obstacles; sometimes they run over while flapping their wings. Intrigued by this behavior, scientists measured how much energy flap running birds use compared to their ...

Why do some birds flap their wings constantly, while others flap their wings, then fix them in position like an aircraft and glide, then flap them again or act as dive bombers? Some birds fly by ...

Seeing little flapping specks that hover in the bright blue yonder or change shape in the blink of an eye? You could be looking at the next generation of aircraft. Government and university ...