title: Comparison of prognostic value of Roper Hall and Dua classification systems in acute ocular burns.
abstract: OBJECTIVE
  To compare the predictive outcome of ocular burns using two different prognostic classification systems, that is, Dua and Roper Hall classification.
  
  
  METHODS
  In a prospective, randomised, controlled clinical trial, the extent of acute ocular burns in 100 patients was graded by Roper Hall and Dua classifications. Patients were randomised in two groups of 50 each to receive conventional medical therapy alone or additional amniotic membrane transplantation (AMT). Moderate burns were graded similarly (grade II and III) under both systems, while severe burns were classified differently and compared further. Baseline parameters (size of epithelial defect, corneal haze, limbal ischaemia, conjunctival involvement and visual acuity) and outcome variables (healing of epithelial defect, corneal clarity, corneal vascularisation, visual outcome and symblepharon) after 1&emsp14;year were noted and compared.
  
  
  RESULTS
  There was no difference in terms of time taken and rate of healing of epithelial defect, but there was a significant difference in extent of corneal vascularisation between grades IV, V and VI (p<0.05). In patients who received AMT in addition to medical therapy, the degree of corneal clarity achieved was significantly better in patients with grade IV burns than either grade V (p=0.045) or grade VI (p=0.024) burns, and final visual acuity was significantly better in these patients (p=0.043). On comparison of patients with grade IV burns (with and without AMT), the outcome in terms of extent of corneal vascularisation was significantly better (p=0.0124) in patients who received AMT.
  
  
  CONCLUSIONS
  Dua classification by providing further subclassification of grade IV ocular burns by Roper Hall into three separate grades has a superior prognostic predictive value in severe ocular burns.
authors.affiliation: Cornea and Refractive Surgery Services, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India. radhika_tan@yahoo.com
authors.forename: Noopur
authors.initials: N
authors.lastname: Gupta
authors.forename: Mani
authors.initials: M
authors.lastname: Kalaivani
authors.forename: Radhika
authors.initials: R
authors.lastname: Tandon
mesh_terms: D000293:Adolescent; D000328:Adult; D002057:Burns, Chemical / Q000145:classification* / Q000503:physiopathology / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D003228:Conjunctiva / Q000293:injuries*; D019573:Epithelium, Corneal / Q000293:injuries*; D005126:Eye Burns / Q000139:chemically induced* / Q000145:classification* / Q000473:pathology / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009883:Ophthalmic Solutions; D011379:Prognosis; D011446:Prospective Studies; D012720:Severity of Illness Index; D014792:Visual Acuity / Q000502:physiology; D014945:Wound Healing / Q000502:physiology; D055815:Young Adult
chemical_list: D009883:Ophthalmic Solutions