Results: 21

Are the effects of hemodialysis on ocular parameters similar during and after a hemodialysis session?

Arq. bras. oftalmol; 80 (5), 2017
ABSTRACT Purpose: To evaluate the changes in several ocular parameters, including choroidal thickness, during and after hemodialysis. Methods: Twenty-seven eyes of 27 patients with chronic renal failure undergoing hemodialysis were included. The patients underwent an ophthalmic examination, including i...

Evaluation of anterior segment parameters using Scheimpflug technology during the Valsalva maneuver in patients with keratoconus

Arq. bras. oftalmol; 79 (6), 2016
ABSTRACT Purpose: This study aimed to explore the effects of the Valsalva maneuver (VM) on ectatic corneas during anterior segment tomography scans using a Scheimpflug camera. Methods: This prospective observational study included 100 eyes of 50 patients with bilateral keratoconus (KC). Anterior segmen...

Corneal structure in tilted disc syndrome

Arq. bras. oftalmol; 79 (5), 2016
ABSTRACT Purpose: To evaluate the central corneal thickness (CCT), corneal volume (CV), and anterior and posterior corneal surfaces using the Scheimpflug imaging system in patients diagnosed with tilted disc syndrome (TDS). Methods: The study group (Group 1) and the control group (Group 2) comprised 35...

Comparison of central corneal thickness estimated by an ultrasonic pachymeter and non-contact specular microscopy

Arq. bras. oftalmol; 79 (5), 2016
ABSTRACT Purpose: To compare central corneal thickness (CCT) measurements of healthy individuals obtained with ultrasonic pachymetry (UP) and non-contact specular microscopy (NCSM). Method: In total, 148 eyes of 74 subjects with no ocular or systemic diseases were included in the study. Central corneal...

Perfil paquimétrico horizontal para a detecção do ceratocone

Rev. bras. oftalmol; 74 (6), 2015
RESUMO Objetivo: Avaliar a capacidade de dados de perfil paquimétrico horizontal, a fim de distinguir o ceratocone de córneas normais, e comparar a precisão de índices com outros tomográficos mais complexos. Métodos: Em um estudo retrospectivo, um olho selecionado aleatoriamente de 225 pacientes co...

Caracterización morfológica de la superficie corneal posterior en córneas normales
Morphological characterization of the posterior corneal surface in normal corneas

Rev. cuba. oftalmol; 27 (3), 2014
OBJETIVO: describir las características de la superficie corneal posterior en córneas normales y las modificaciones de esta en pacientes a quienes se les realizó queratomileusis con láser in situ. MÉTODOS: fue realizado un estudio descriptivo, longitudinal y prospectivo en 282 ojos de pacientes que ...

Analysis of low-energy and high-frequency femtosecond laser for the construction of deep anterior donor corneal lamellae

Rev. bras. oftalmol; 73 (2), 2014
Purpose: To evaluate the efficacy and reliability of a low-energy femtosecond laser with a high repetition rate for construction of deep anterior donor corneal lamellae. Methods: This was a prospective laboratory investigation. Twenty-five human corneal buttons were femtosecond laser cut to create thick ...

Relevância da biomecânica da córnea no glaucoma

Rev. bras. oftalmol; 73 (1), 2014
Relato de caso de uma paciente, com córnea espessa, por distrofia de Fuchs em fase inicial, ainda com transparência corneana preservada (edema corneano subclínico), associado à pressão intraocular (PIO) normal por tonometria de aplanação de Goldman (TAG), que teve entretanto, o diagnóstico de gla...

Relevância da biomecânica da córnea no glaucoma

Rev. bras. oftalmol; 71 (2), 2012
Relato de caso de uma paciente, com córnea espessa, por distrofia de Fuchs em fase inicial, ainda com transparência corneana preservada (edema corneano subclínico), associado à pressão intraocular (PIO) normal por tonometria de aplanação de Goldman (TAG), que teve entretanto, o diagnóstico de gla...

Repeatability of central corneal thickness measurement with the Pentacam HR system

Rev. bras. oftalmol; 71 (1), 2012
PURPOSE: To assess the repeatability of central corneal thickness measurement at the geometrical center (Central Corneal Thickness - CCT) given by the Pentacam High Resolution (HR) Comprehensive Eye Scanner (Oculus, Wetzlar, Germany) over time. METHODS: Prospective, single center, observational study. Tw...