title: Dynamic contour tonometry in asymmetric glaucoma patients.
abstract: BACKGROUND
  The purpose of this study was to determine any difference in dynamic contour tonometry and ocular pulse amplitude in asymmetric glaucoma patients with the same applanation intraocular pressure.
  
  
  METHODS
  This is a prospective, observational study of 30 glaucoma patients and 11 controls from June 2007 to February 2008. Most of the glaucoma patients were on prostaglandin analog treatment.
  
  
  RESULTS
  Mean applanation intraocular pressure in the control group was 14.28 mmHg for the right eye and 14.10 mmHg for the left eye (P > 0.05). Corneal thickness was 519.10 μm for the right eye and 511.07 μm for the left eye (P > 0.05). Mean dynamic contour tonometry intraocular pressure was 17.28 mmHg for the right eye and 17.25 mmHg for the left eye (P > 0.05). Mean ocular pulse amplitude was 2.80 mmHg for the right eye and 2.92 mmHg for the left eye (P > 0.05).
  
  
  CONCLUSIONS
  No differences in ocular pulse amplitude were found between the two groups and between the worst and the best eye. In spite of there being no difference in ocular pulse amplitude, dynamic contour tonometry intraocular pressure was 2.44 mmHg higher in the worst eye than in the best eye in the glaucoma patients, even with the same applanation intraocular pressure. Further studies are needed to confirm if this difference is related to glaucoma progression or a worst prognosis and whether it can be considered to be a new risk factor.
authors.affiliation: Glaucoma Service, Santa Casa de Belo Horizonte, MG, Brazil.
authors.forename: Emilio Rintaro
authors.initials: ER
authors.lastname: Suzuki
authors.forename: Cibele Lima Belico
authors.initials: CL
authors.lastname: Suzuki
authors.forename: Danielle
authors.initials: D
authors.lastname: Carlier
authors.forename: Daniele
authors.initials: D
authors.lastname: Penha
authors.forename: Marta Dos Anjos Rodrigues
authors.initials: Mdos A
authors.lastname: Parchen
authors.forename: Wagner Duarte
authors.initials: WD
authors.lastname: Batista
authors.forename: Joao Agostini
authors.initials: JA
authors.lastname: Netto