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.
Recovery after PRK occurs in stages: 1  Stage 1 - seconds to minutes after the procedure, the vision is surprisingly clear, actually better than it is after LASIK at this point. 2  Stage 2 - begins about 30-60 min after the procedure, as the numbing drops used during surgery wear off.