31.   The study was designed to let patients in the laser group receive the balloon procedure if the laser was not effective by itself.

32.   There will be lasers.

33.   This week, it turns out, a laser is nearly ready for space tests.

34.   Thus, the laser is largely aluminum.

35.   Tuned to the infrared range, the laser light is invisible to the eye.

36.   A laser is a device that generates an intense beam of light.

37.   At the University of California-Davis, lasers are under study as an antimicrobial treatment.

38.   Ground testing already has shown these lasers to be lethal to missiles.

39.   In PRK, the laser is set to the correction required for each eye.

40.   Instead of a narrow beam, the atom laser was like a dripping blob.