Welcome to Richter Sand! 1  Richter Sand is a sand & stone supplier that was established in 1996 and has been in operation ever since. The enterprise consists of a well-groomed family business, with the second generation taking over. The directors has more than 25 years collective experience in the business of mining and supply of sand and stone, to the building industry and other enterprises in and around Pretoria. The business has grown from transporting of sand to supplying of sand to other transporters.
Transjugular intrahepatic portosystemic shunt (TIPS) is a procedure to create new connections between two blood vessels in your liver. You may need this procedure if you have severe liver problems. Reference from A.D.A.M.
PRK (photorefractive keratectomy) is a type of refractive surgery to correct myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. PRK was the first type of laser eye surgery for vision correction and is the predecessor to the popular LASIK procedure.Though PRK recovery takes a bit longer than recovery from LASIK eye surgery, PRK is still commonly performed and offers advantages over LASIK for some patients.he main difference between PRK and LASIK is that in LASIK surgery a thin, hinged flap is created on the cornea to access the treatment area, whereas in PRK the cornea's entire epithelial (outer) layer is removed to expose the area and no flap is created.