Bitter taste from...: Common causes of a bitter taste in the mouth include acid reflux, taking certain medications or even poor oral hygiene. Your sense of taste can also be impaired or distorted permanently from long-term smoking. Finally, a sudden bitter taste in the mouth can be a sign of an infection or other condition that requires immediate treatment.
Medical procedures that can be performed using the harmonic scalpel include thyroidectomy, lung biopsy, laparoscopic cyst decortication, tonsillectomy, and gynaecologic cancer. Many plastic surgeons have also found that it is a better system to performing plastic surgery, such as a face-lift, breast reduction, breast augmentation, or tummy tuck.
There are a number of different surgical techniques used to reshape the cornea. During PRK, an eye surgeon uses a laser to reshape the cornea. This laser, which delivers a cool pulsing beam of ultraviolet light, is used on the surface of the cornea, not underneath the cornea, as in LASIK.