title: [Development of corneal sensitivity after phacoemulsification with scleral tunnel incision].
abstract: BACKGROUND
  after anterior segment surgery the anatomical structures and in particular corneal metabolism and corneal trophic are reduced. The corneal wound healing might be monitored by measuring corneal sensitivity.
  
  
  METHODS
  In a prospective study of 1 year corneal sensation of 26 patients, age = 72.49 +/- 11.09 years, after phacoemulsification with scleral tunnel is examined. Corneal sensitivity is measured with the Draeger aesthesiometer in the corneal center, in the 6 o'clock and 12 o'clock position before and 4 weeks, 4 months and 1 year after the operation.
  
  
  RESULTS
  The preoperative corneal sensitivity thresholds before the operation are with 11.61 +/- 10.49 x 10(-5) N in the 12 o'clock position, in the center with 2.43 +/- 2.57 x 10(-5) N and in the 6 o'clock position with 11.86 +/0 10.37 x 10(-5) N normal. Even 1 year after surgery corneal sensitivity is markedly reduced with 257.08 +/- 306.71 x 10(-5) N, 107.77 +/- 246.76 x 10(-5) N and 82.81 +/- 140.77 x 10(-5) N in the 6 o'clock position.
  
  
  CONCLUSIONS
  Even 1 year after phacoemulsification corneal sensitivity is definitely hyposensitive in the center and descretely hypotensitive in the periphery at the 6 o'clock.
authors.affiliation: Universitäts-Augenklinik Hamburg-Eppendorf.
authors.forename: M
authors.initials: M
authors.lastname: Kohlhaas
authors.forename: O
authors.initials: O
authors.lastname: Stahlhut
authors.forename: J
authors.initials: J
authors.lastname: Tholuck
authors.forename: G
authors.initials: G
authors.lastname: Richard
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003315:Cornea / Q000294:innervation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011183:Postoperative Complications / Q000503:physiopathology; D011446:Prospective Studies; D012016:Reference Values; D012599:Sclerostomy; D011984:Sensory Receptor Cells / Q000503:physiopathology*; D012684:Sensory Thresholds / Q000502:physiology; D014945:Wound Healing / Q000502:physiology*