<prompt> Procedure of choice for ptosis in Horners syndrome?LPS resectionBilateral slingUnilateral slingFasanella Servat  <response>: Procedure of choice of ptosis in Horner syndrome: Fasanella Servat or Mullerectomy in case of good levator action Superior Tarsal muscle or Mullers muscle is the that is responsible for keeping the upper lid in a raised position after the LPS raises it. It is supplied by the sympathetic system. Hence it is involved in patients with Horners Syndrome. As levator remains intact, the degree of ptosis is mild - hence paial ptosis in patients with Horners Syndrome 