Definition of GOUACHE. 1. : a method of painting with opaque watercolors.2. a: a picture painted by gouache b: the pigment used in gouache. ADVERTISEMENT.. : a method of painting with opaque watercolors. 2. a: a picture painted by gouache b: the pigment used in gouache.
On average, PRK costs between $1,800 and $6,500, depending on the severity of the refractive error and the degree of customization the patient requires. Doctors often price PRK surgery per eye, although most patients will need to correct both eyes.
PRK Eye Surgery Procedure â What is Photorefractive Keratectomy. PRK laser eye surgery, or PhoÂ­toreÂ­fracÂ­tive KerÂ­aÂ­teÂ­cÂ­toÂ­my is part of a famÂ­iÂ­ly of proÂ­ceÂ­dures called âsurÂ­face ablaÂ­tionsâ because the laser is applied directÂ­ly on the surÂ­face of the cornea rather than under a flap, as with LASIK. The PRK surgery is done under topÂ­iÂ­cal anesÂ­theÂ­sia and takes about 5 minÂ­utes per eye.