title: [Impact of follow-up loss over visual deficiency in open-globe ocular trauma].
abstract: BACKGROUND
  Open-globe ocular trauma causes visual deficiency; calculating the magnitude of the latter often misses the estimation in patients without follow-up.
  
  
  OBJECTIVE
  to identify the modification of the postoperative proportion of visual deficiency in open-globe ocular trauma, which would introduce considering the proportion estimated in patients without follow-up.
  
  
  METHODS
  Non-interventional, retrospective, longitudinal, analytical study. Visual outcome in eyes with open-globe trauma, with and without follow-up, was calculated using the Ocular Trauma Score. The observed postoperative proportion of visual deficiency was identified in eyes with follow-up; in eyes without follow-up, the postoperative proportion of visual deficiency was estimated using an analysis of scenarios: best (Ocular Trauma Score), mean (that of eyes with follow-up) and worst (last observation/no visual improvement). The estimated proportion of visual deficiency was added to that observed in eyes with follow-up, and the resulting proportion was compared with that expected in the sample, using the Ocular Trauma Score (χ(2)).
  
  
  RESULTS
  104 eyes, 70 without follow-up and 34 without it. In eyes with follow-up the expected proportion of visual deficiency was 58.6%, and the observed one was 71.4% (p = 0.1); the estimated proportion of visual deficiency in eyes without follow-up was 76.5%. The resulting postoperative proportion of visual deficiency in the sample would be 73.1%, which would overcome that expected by the Ocular Trauma Score (59.6%, p = 0.04).
  
  
  CONCLUSIONS
  In open-globe ocular trauma, the efficacy of surgery to reduce the proportion of visual deficiency would decrease with regard to the standard expected by the Ocular Trauma Score, if the deficiency estimated in eyes without follow-up were considered.
authors.affiliation: Servicio de Oftalmología, Hospital Juárez de México, D.F., México dulcerazo@yahoo.com.mx.
authors.forename: Virgilio
authors.initials: V
authors.lastname: Lima-Gómez
authors.forename: Yatzul Zuhaila
authors.initials: YZ
authors.lastname: García-Rubio
authors.forename: Dulce Milagros Razo
authors.initials: DM
authors.lastname: Blanco-Hernández
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D009877:Endophthalmitis / Q000453:epidemiology / Q000209:etiology; D005129:Eye Foreign Bodies / Q000150:complications / Q000453:epidemiology / Q000601:surgery; D015807:Eye Injuries, Penetrating / Q000150:complications / Q000453:epidemiology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010352:Patient Dropouts / Q000706:statistics & numerical data; D011183:Postoperative Complications / Q000453:epidemiology; D011681:Pupil Disorders / Q000453:epidemiology / Q000209:etiology; D020127:Recovery of Function; D012163:Retinal Detachment / Q000453:epidemiology / Q000209:etiology; D012189:Retrospective Studies; D012421:Rupture / Q000453:epidemiology / Q000601:surgery; D013530:Surgical Wound Infection / Q000453:epidemiology / Q000209:etiology; D015599:Trauma Severity Indices; D016896:Treatment Outcome; D014786:Vision Disorders / Q000453:epidemiology / Q000209:etiology; D014792:Visual Acuity; D014946:Wound Infection / Q000453:epidemiology / Q000209:etiology; D055815:Young Adult
keywords: eye injuries; follow-up; ocular trauma; open-globe; visual deficiency