Results: 20

Vertex distance variability of the Vision-S™ 700 refractors in normal population

Rev. bras. oftalmol; 83 (), 2024
ABSTRACT Objective: To study vertex-optical distance variation and estimate its impact on manifest refraction. Methods: Prospective study in a private clinic using the Vision-S™ 700 with five forehead positions. Forehead on the third position showed the closest vertex-optical distance of 12mm. R...

Status refracional: elemento essencial para avaliação de pacientes para cirurgia refrativa da catarata

Rev. bras. oftalmol; 83 (), 2024

Biometric error analysis after cataract surgery performed by residents, in patients with high myopia with SRK/T formula and Wang-Koch formula adjustment

Rev. bras. oftalmol; 83 (), 2024
ABSTRACT Objective To evaluate intraocular lens power calculation and postoperative refractive errors in patients with high myopia undergoing cataract surgery, comparing predicted target refraction and actual postoperative refraction measured 30 days after surgery with SRK/T formula. Methods This ret...

Treatment of irregular astigmatism by topography-guided ablation

Rev. bras. oftalmol; 83 (), 2024
ABSTRACT Topography-guided ablation was designed to improve corneal regularity throughout the correction of corneal high order aberrations. The present report described three cases with different indications for topography-guided ablation to correct irregular astigmatism. The patients were monitored in t...

Equivalent keratometer reading para cálculo biométrico em córneas assimétricas: série de casos

Rev. bras. oftalmol; 81 (), 2022
RESUMO A acurácia do cálculo da lente intraocular não é perfeita, podendo ser comuns erros refrativos pós-operatórios, especialmente em pacientes submetidos à cirurgia refrativa prévia ou na presença de córneas assimétricas. O poder corneano após cirurgia refrativa pode ser medido com maior a...

Comparison of prediction accuracy of five different biometric formulas

Rev. bras. oftalmol; 80 (5), 2021
ABSTRACT Objective To compare the performance of Sanders-Retzlaff-Kraft/Theoretical, Hoffer Q, Barrett Universal II, Kane, and Hill-radial basis function formulas to calculate intraocular lens power in eyes with normal axial length, in terms of predicting target refraction by using partial coherence in...

Comparing the postoperative refractive predictability of Pentacam HR and IOLMaster 500 after a multifocal intraocular lens implantation

Arq. bras. oftalmol; 83 (2), 2020
ABSTRACT Purpose: To compare the postoperative refractive predictability of IOLMaster 500 and Pentacam HR on the basis of keratometry and anterior chamber depth values in eyes with an indication for multifocal intraocular lens (IOL) implantation. Methods: This was a retrospective study conducted on 118...

Clinical experience after tetrafocal intraocular lens implantation "PANOPTIX"

Rev. bras. oftalmol; 79 (1), 2020
Abstract Purpose: To assess long, intermediate and near uncorrected visual acuity after a tetrafocal diffractive intraocular lens implantation, presence of dystopic phenomenon and patient satisfaction after surgery. Methods: Retrospective, observational study performed in Puerta de Hierro Specialties H...

Refractive and visual outcomes after Ferrara corneal ring segment implantation at a 60% depth in keratoconic eyes: case series

Arq. bras. oftalmol; 82 (6), 2019
ABSTRACT Purpose: This report addresses refractive, topographic, visual acuity, and optical coherence tomography outcomes 12 months after femtosecond, laser-assisted insertion of Ferrara intrastromal corneal ring segments in keratoconic eyes at a depth of 60%. Methods: Interventional, prospective, non-...