RESUMEN
Tono-Pen and Goldmann tonometers were compared in 152 eyes of healthy subjects (Group A) and 69 eyes of patients after intraocular procedures (Group B). In Group A, the readings from both the tonometers showed no statistically significant difference in the 0 to 15mmHg range. However, the Tono-Pen values were lower in eyes with intraocular pressures between 16 and 30mmHg (P less than .0001). This questions the reliability of Tono-Pen as an adequate screening instrument. The correlation between the two instruments was acceptable in Group B (r = .89), indicating that the Tono-Pen may be used cautiously to determine intraocular pressure in postoperative patients.
Asunto(s)
Catarata/fisiopatología , Presión Intraocular , Hipertensión Ocular/fisiopatología , Tonometría Ocular/instrumentación , Adolescente , Adulto , Anciano , Extracción de Catarata , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los ResultadosRESUMEN
Abnormal intraocular pressure (IOP), either transient or permanent, may follow extracapsular cataract extraction (ECCE) with phacoemulsification (PE) and posterior chamber intraocular lens (PC-IOL) implantation. We retrospectively studied IOP measurements at different intervals post ECCE and PE in 242 eyes of 211 patients: 105 males, 106 females, 198 Caucasians and 13 blacks. Elevated IOP (greater than 23 mm Hg) was observed in 20 eyes (8.2%). Only two patients (0.8%) had persistent (greater than 3 months) IOP elevation and needed antiglaucoma therapy. Six more eyes (2.5%), however, developed glaucoma after 1 year. Hence, the incidence of secondary pseudophakic glaucoma at the conclusion of this study was 3.3%. No patient required laser or other mechanical surgery for IOP control. ECCE and PE with PC-IOL does not appear to adversely affect IOP. Patients, however, must be followed closely, as some may develop glaucoma months after surgery.