Pathological ptosis of the eyelids can be manifest already at birth but may develop also in advanced age. In children the congentital form predominates with or without affection of the elevators of the eyes (Congenital fibrous syndrome or Misdirection syndrome). A special form is blepharophimosis, juvenile blepharo- chalasis and Marcus-Gunn´s syndrome. In adult age the etiology of acquired ptosis of the upper eyelid is more varied. There are mechanical causes incl. dermatocha- lasis or it develops on a myogenic and neurogenic background or as the aponeu- rotic form. The group comprises 46 patients 3-70years old where in the course of the last three years at the Ophthalmological Clinic of the Faculty Hospital Prague Vinohrady a total of 54 operations of ptoses were made. Resection of the tarsal plate according to Fasanella-Servat was used in 29 instan- ces. In four eyes a plastic operation of the aponeurosis of the levator was perfor- med. Frontotarsal suspension in the authors modification of Fox method using deep freeze-dried allogenei fasciae was used in the paretic form of ptosis in 21 eyes. The authors give also an account of the technological preparation of a fascial graft kept at a temperature of -80 °C.

        Key words: ptosis, tarsoresection,plastic operation of aponeurosis of eyelid, fron- totarsal suspension, deep freeze-dried allogenei fascia