title: Slit-lamp exophthalmometry, a novel technique.
abstract: OBJECTIVE
  Exophthalmometry is clinically important for diagnoses, follow-up, and treatment decision-making. Through the years, several drawbacks and sources of error have been described when using Hertel and other exophthalmometers.
  
  
  METHODS
  We describe a simple method of non-touch slit-lamp exophthalmometry. Comparing the results between Hertel and slit-lamp exophthalmometry on 60 patients with proptosis showed no statistically significant differences in the two methods.
  
  
  RESULTS
  A total of 60 consecutive patients with proptosis were included. Thirty-six cases (60 %) were women. Their mean age was 55.6 ± 16.4 (median 57.5, range 20-87) years. Only 5 % of the measurements had more than 2 mm difference between the two techniques. There were no significant differences in the measurements between the two methods. Intra-correlation coefficient is 0.96 for right side and 0.956 for lest side. The Bland-Altman plot revealed good agreement.
  
  
  CONCLUSIONS
  Slit-lamp exophthalmometry offers a simple, easily available, and reliable non-touch technique that does not require an exophthalmometer.
authors.affiliation: Department of Ophthalmology, Meir Medical Center, Kfar Sava, Israel.
authors.forename: Yehoshua
authors.initials: Y
authors.lastname: Almog
authors.forename: Eli
authors.initials: E
authors.lastname: Rosen
authors.forename: Arie Y
authors.initials: AY
authors.lastname: Nemet
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005094:Exophthalmos / Q000175:diagnosis*; D005260:Female; D049970:Graves Ophthalmopathy / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D054517:Orbital Cellulitis / Q000473:pathology; D009918:Orbital Neoplasms / Q000473:pathology; D010808:Physical Examination; D066167:Slit Lamp; D055815:Young Adult