title: Comparison of Intraocular Pressure before and after Laser In Situ Keratomileusis Refractive Surgery Measured with Perkins Tonometry, Noncontact Tonometry, and Transpalpebral Tonometry.
abstract: Purpose. To compare the intraocular pressure (IOP) before and after Laser In Situ Keratomileusis (LASIK), measured by Diaton, Perkins, and noncontact air pulse tonometers. Methods. Fifty-seven patients with a mean age of 34.88 were scheduled for myopia LASIK treatment. Spherical equivalent refraction (SER), corneal curvature (K), and central corneal thickness (CCT) and superior corneal thickness (SCT) were obtained before and after LASIK surgery. IOP values before and after surgery were measured using Diaton, Perkins, and noncontact air pulse tonometers. Results. The IOP values before and after LASIK surgery using Perkins tonometer and air tonometers were statistically significant (p < 0.05). However, no significant differences were found (p > 0.05) for IOP values measured with Diaton tonometer. CCT decreases significantly after surgery (p < 0.05) but no statistical differences were found in SCT (p = 0.08). Correlations between pre- and postsurgery were found for all tonometers used, with p = 0.001 and r = 0.434 for the air pulse tonometer, p = 0.008 and r = 0.355 for Perkins, and p < 0.001 and r = 0.637 for Diaton. Conclusion. Transpalpebral tonometry may be useful for measuring postsurgery IOP after myopic LASIK ablation because this technique is not influenced by the treatment.
authors.affiliation: Instituto Balear de Oftalmología, 07011 Palma de Mallorca, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Cacho
authors.affiliation: Instituto Balear de Oftalmología, 07011 Palma de Mallorca, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Sanchez-Naves
authors.affiliation: Departamento de Óptica II (Optometría y Visión), Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Batres
authors.affiliation: Departamento de Bioquímica y Biología Molecular IV, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain.
authors.forename: Jesús
authors.initials: J
authors.lastname: Pintor
authors.affiliation: Departamento de Óptica II (Optometría y Visión), Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain ; Departamento de Bioquímica y Biología Molecular IV, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain.
authors.forename: Gonzalo
authors.initials: G
authors.lastname: Carracedo