Sudden loss of vision? Red eye?  Flashing lights or Floaters? If you have any urgent eye problems that need an immediate appointment please call one of our practices. All of our optometrists are accredited to perform EHEW (Eye health examinations) which is part of the WECS scheme. WECS (Wales Eye Care Service) – WECS is unique to Wales and offers eye examinations for patients with an acute eye problem that needs urgent attention or those at increased risk of eye disease or who would find losing their sight particularly difficult. These examinations do not cost you anything.