title: Assessment of the predictive value of intraoperative eyelid height measurements in sitting and supine positions during blepharoptosis repair.
abstract: OBJECTIVE
  To examine relationships between intraoperative and postoperative eyelid heights in relation to patient postures in blepharoptosis surgery.
  
  
  METHODS
  Thirty eyelids in 15 patients with bilateral aponeurotic ptosis were selected. The margin reflex distance-1 (MRD-1) was measured with the patients in the sitting position preoperatively, intraoperatively, and in the postoperative 6 weeks. MRD-1 also was measured intraoperatively with patients in the supine position. The intraoperative sitting and supine values and the postoperative values were statistically compared using a paired t test, and lateralities in those groups were statistically analyzed using Student's t test.
  
  
  RESULTS
  From the intraoperative measurements, mean MRD-1 values in the sitting position (right: 3.80 mm, left: 3.73 mm) were significantly lower than those in the supine position (right: 4.37 mm, p < 0.001; left: 4.33 mm, p < 0.001). In the postoperative 6 weeks, mean MRD-1 values (right: 3.80 mm, left: 3.63 mm) were not significantly different from intraoperative values in the sitting position (right: p = 1.000, left: p = 0.189), but were significantly lower than intraoperative values in the supine position (right: p < 0.001, left: p < 0.001). There was no significant laterality among the three groups (supine intraoperative: p = 0.890, sitting intraoperative: p = 0.785, postoperative: p = 0.546).
  
  
  CONCLUSIONS
  Intraoperative measurements in the sitting position more accurately predicted postoperative eyelid height than did measurements with the patient in a supine position.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Osaka City University Graduate School of Medicine, Asahi-mach, Abeno-ku, Osaka, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Kakizaki
authors.forename: Hidenori
authors.initials: H
authors.lastname: Mito
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Shiraki
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D001763:Blepharoptosis / Q000601:surgery*; D003941:Diagnostic Techniques, Ophthalmological; D005143:Eyelids / Q000473:pathology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011237:Predictive Value of Tests; D016683:Supine Position