Walton Nosé | Universidade Federal de São Paulo (UNIFESP) (original) (raw)
Papers by Walton Nosé
Objetivo: Comparar os resultados obtidos após o Lasik personalizado utilizando duas plataformas d... more Objetivo: Comparar os resultados obtidos após o Lasik personalizado utilizando duas plataformas diferentes. Métodos: Estudo prospectivo, randomizado com 50 pacientes míopes submetidos a cirurgia refrativa em ambos os olhos. Foram selecionados para o ...
To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in... more To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in determining corneal epitheliumϪintraocular lens (IOL) and border IOLϪiris distances.
Arquivos Brasileiros De Oftalmologia, 2000
... experimental, Documentos relacionados. Id: 288002. Autor: Forseto, Adriana dos Santos; Nosé, ... more ... experimental, Documentos relacionados. Id: 288002. Autor: Forseto, Adriana dos Santos; Nosé, Regina Aidar Menon; Nosé, Walton. Título: PRK versus LASIK para correçäo de miopia baixae moderada / PRK versus LASIK for correction of low and moderate myopia. Fonte: Arq. ...
Arquivos Brasileiros De Oftalmologia, 2001
Abstract: Objetivo: Avaliar alterações do cristalino relacionadas à idade, em olhos normais, anal... more Abstract: Objetivo: Avaliar alterações do cristalino relacionadas à idade, em olhos normais, analisando-se sua densidade e espessura, além da profundidade da câmara anterior (PCA). Métodos: Foram estudados 120 olhos de 60 pacientes hígidos por meio do ...
Arquivos brasileiros de oftalmologia, 2014
This case report describes the production of an ultrathin endothelial donor corneal lamella using... more This case report describes the production of an ultrathin endothelial donor corneal lamella using a femtosecond laser with low energy and a high frequency. In addition, we report its use in vivo in an eye with pseudophakic bullous keratopathy. The outcomes were observed 3 months after surgery in terms of the change in endothelial donor lamella and full cornea thickness (including pachymetric mapping), visual acuity, and endothelial cell count.
Arquivos Brasileiros De Oftalmologia, 2001
Journal of Cataract and Refractive Surgery, 1999
Purpose:To assess the safety and effectiveness of excimer laser in situ keratomileusis(LASIK) to ... more Purpose:To assess the safety and effectiveness of excimer laser in situ keratomileusis(LASIK) to correct refractive myopia, astigmatism, or both after keratoplasty.
Retina, 2010
Wolters Kluwer Health may email you for journal alerts and information, but is committed to maint... more Wolters Kluwer Health may email you for journal alerts and information, but is committed to maintaining your privacy and will not share your personal information without your express consent. For more information, please refer to our Privacy Policy. ... Skip Navigation Links Home > March ...
Ophthalmology, 2010
To compare the outcome of phacoemulsification using 2 different iris-fixation techniques for intr... more To compare the outcome of phacoemulsification using 2 different iris-fixation techniques for intraocular lens (IOL) replacement, a foldable posterior chamber IOL (PCIOL; AcrySof MA60AC, Alcon Laboratories Inc, Fort Worth, TX) and an iris-claw anterior chamber IOL (ACIOL; Artisan, Ophtec BV), for treatment of subluxated lenses in patients with Marfan syndrome (MFS). Randomized, controlled trial. A total of 31 eyes of 16 patients with subluxated lenses associated with MFS and a preoperative corrected visual acuity (CVA) < or =20/40 based on the Early Treatment Diabetic Retinopathy Study chart. Patients were enrolled and the eye with worse visual acuity was randomly assigned to 1 of 2 study arms: phacoemulsification and iris-fixated PCIOL or phacoemulsification and iris-claw ACIOL; the second eye of the same patient received the other IOL type. Preoperative and postoperative ophthalmologic examination, optical coherence tomography, and endothelial cell counts were performed. We recorded CVA results at 3, 6, and 12 months, complications, endothelial cell loss, and central retinal thickness. In the iris-fixated PCIOL group, CVA was significantly improved at 3 (P = 0.011; n = 16), 6 (P = 0.006; n = 16), and 12 months (P = 0.002; n = 16). In the iris-claw ACIOL group, CVA was significantly improved at 3 (P = 0.001; n=15), 6 (P = 0.001; n = 15), and 12 months (P = 0.009; n = 12). The CVA results did not differ significantly between groups. Dislocation of the IOL occurred in 3 of 16 (18.75%) eyes in the PCIOL group. Retinal detachment occurred in 3 eyes (2 in the PCIOL group and 1 in the ACIOL group) and was successfully repaired. Postoperative foveal tomograms in both groups revealed a decrease in the mean foveal thickness (MFT; < or =172 microm) in 54.16% of the patients. The iris-sutured PCIOL and iris-claw ACIOL produced comparable improvements in CVA at 3, 6, and 12 months postoperatively. Although IOL dislocation tended to occur more frequently in the iris-fixated PCIOL group, the difference was not significant. At 6 months postoperatively, all study patients tended to have a thinner MFT. None of the patients in either group developed cystoid macular edema.
Ophthalmology, 2010
Purpose: To compare corneal hysteresis (CH), corneal resistance factor (CRF), spherical equivalen... more Purpose: To compare corneal hysteresis (CH), corneal resistance factor (CRF), spherical equivalent (SE), average central keratometry (K-Avg), corneal astigmatism (CA), corneal volume (CV), anterior chamber (AC) depth, and central corneal thickness (CCT) between patients with mild keratoconus and healthy controls and to estimate the sensitivity and specificity of CH and CRF in discriminating mild keratoconus from healthy corneas.
Ophthalmology, 2007
To compare distance-corrected, near, and intermediate visual acuities as a measurement of depth o... more To compare distance-corrected, near, and intermediate visual acuities as a measurement of depth of focus and spherical aberration of eyes implanted with aspheric and spherical intraocular lenses (IOLs).
Ophthalmology, 2002
To evaluate hyperopic laser in situ keratomileusis (H-LASIK) for radial keratotomy (RK)-induced h... more To evaluate hyperopic laser in situ keratomileusis (H-LASIK) for radial keratotomy (RK)-induced hyperopia. Noncomparative interventional retrospective nonconsecutive case series. Sixty-nine eyes of 47 patients who had undergone RK and were seen with induced hyperopia. H-LASIK was performed with an excimer laser. The mean refractive error, in spherical equivalents (SE), uncorrected visual acuity (UCVA), and best spectacle-corrected visual acuity (BSCVA) before and after H-LASIK are reported. Safety was analyzed using a mean follow-up time of 6.6 plus minus 3.24 months. Preoperative mean SE was +3.4 plus minus 1.6 diopters (D). Postoperative mean SE was -0.32 plus minus 1.2 D. A high percentage of eyes (79.7%; n = 55) were between plus minus1.0 D of emmetropia and 88% within plus minus 2.0 D. Preoperative BSCVA was 20/20 in 53.6% of eyes (n = 37) and 20/40 or better in 100% (n = 69). Postoperative BSCVA was 20/20 in 55% of eyes (n = 38) and 20/40 or better in 95.6% (n = 66) of eyes. Preoperative UCVA was less-than-or-equal20/50 in 52 cases (75.4%). Postoperative UCVA was 20/20 in 13 cases (18.8%) and greater-than-or-equal20/40 in 45 cases (65.2%). Four eyes lost 2 Snellen lines because of epithelial ingrowth in the interface (n = 3) and diffuse lamellar keratitis (Sands of the Sahara syndrome; n = 2). One of the eyes with Sahara syndrome also had epithelial ingrowth and flap necrosis. Thirteen eyes lost 1 Snellen line, and 50 eyes maintained or gained Snellen lines. The only intraoperative complication was incision opening (n = 8) while the flap was lifted; there were no further complications. These patients did not lose any Snellen lines of their BSCVA. H-LASIK can be used successfully to correct RK-induced hyperopia.
Journal of Refractive Surgery, 2010
PURPOSE: To evaluate and compare tomographic, clinical, and biomechanical data of patients with u... more PURPOSE: To evaluate and compare tomographic, clinical, and biomechanical data of patients with unilateral keratoconus and healthy controls.
Journal of Cataract & Refractive Surgery, 2014
PURPOSE: To compare the outcomes of congenital cataract surgery using intraoperative intracameral... more PURPOSE: To compare the outcomes of congenital cataract surgery using intraoperative intracameral triamcinolone versus postoperative oral prednisolone to modulate ocular inflammation. SETTING: Department of Congenital Cataract, Altino Ventura Foundation, Recife, Brazil. DESIGN: Randomized clinical trial.
Journal of Cataract & Refractive Surgery, 2001
To evaluate the effectiveness of the surgical correction of high myopia 5 years after anterior ch... more To evaluate the effectiveness of the surgical correction of high myopia 5 years after anterior chamber intraocular lens (IOL) implantation and to analyze the lens position and related complications. Federal University of São Paulo-Escola Paulista de Medicina, São Paulo, Brazil. This prospective study comprised 26 eyes that were implanted with an anterior chamber IOL (model ZB5M) and had a minimum follow-up of 5 years. Before and after surgery, manifest and cycloplegic refractions were done; slitlamp examination was performed; anterior chamber depth was measured; and keratometry, ophthalmoscopy, and central corneal endothelial cell count were performed. At the last follow-up, computerized biomicroscopy of the anterior segment was also done. The spherical equivalent decreased from -16.5 diopters (D) +/- 4.1 (SD) preoperatively to -0.9 +/- 0.9 D postoperatively. At the last examination, 57.7% of eyes had a spherical equivalent refraction within +/-1.0 D of emmetropia. Of eyes with a preoperative best spectacle-corrected visual acuity of 20/40 or better, 73.3% had an uncorrected visual acuity of 20/40 or better postoperatively. The mean tilt caused by the IOL was 4.4 +/- 2.7 degrees (range 0.5 to 12.2 degrees) and the mean IOL decentration, 0.3 +/- 0.2 mm (range 0.02 to 0.8 mm). The mean decrease in the endothelial cell count was 1.5%, with a mean cell density of 2808 +/- 305 cells/mm2 preoperatively and 2765 +/- 242 cells/mm2 postoperatively. Pupillary ovalization was observed in 12 eyes (46.1%). The anterior chamber IOL safely and effectively corrected high myopia.
Journal of Cataract & Refractive Surgery, 2003
To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in... more To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in determining corneal epitheliumϪintraocular lens (IOL) and border IOLϪiris distances.
Journal of Cataract & Refractive Surgery, 2007
To evaluate the amount of ultrasound (US) used, best corrected visual acuity (BCVA), and corneal ... more To evaluate the amount of ultrasound (US) used, best corrected visual acuity (BCVA), and corneal endothelial cell loss in bimanual microincision cataract surgery (MICS) and coaxial phacoemulsification. Department of Ophthalmology, Universidade Gama Filho, Rio de Janeiro, Brazil. A prospective randomized study included 30 patients (60 eyes) with bilateral cataract. All patients had coaxial phacoemulsification in 1 eye and MICS in the fellow eye. The US time and the effective US time were measured intraoperatively. The BCVA and central endothelial cell loss were evaluated in both groups over a 1-year follow-up. The results between the 2 groups were compared. The total US time was lower in the coaxial phacoemulsification group than in the MICS group; the means were 0.50 minutes +/- 0.33 (SD) and 0.82 +/- 0.39 minutes, respectively. The mean US power was similar between groups (mean 10.1% +/- 3.76% and 10.0% +/- 4.0%, respectively). The BCVA was similar between the groups from 24 hours to 1 year. The mean central corneal endothelial cell loss at 3 months was 4.66% +/- 6.10% in the coaxial phacoemulsification group and 4.45% +/- 5.06% in the MICS group and at 1 year, 6.00% +/- 6.72% and 8.82% +/- 7.39%, respectively. The only significant difference in the postoperative results between the 2 groups was central endothelial cell loss at the 1-year follow-up. The US time was longer in the MICS group than in the in the coaxial phacoemulsification group, but the mean US power was similar between groups. The BCVA was also similar between groups; however, the MICS group had more central endothelial cell loss at the 1-year follow-up.
Journal of Cataract & Refractive Surgery, 2007
To analyze higher-order aberrations induced by different types of lenticular opacities. Federal U... more To analyze higher-order aberrations induced by different types of lenticular opacities. Federal University of São Paulo, São Paulo, Brazil. One hundred thirty-eyes of 65 patients with bilateral cataract, classified according to the Lens Opacities Classification System III (LOCS III), had complete ophthalmic examinations, corneal topography (EyeSys Technologies), and wavefront analysis (LADARWave, Alcon Laboratories). Patients with cataracts that could not be measured by a Hartmann-Shack sensor or those with coexisting ocular disease were excluded. Higher-order aberrations were compared between the nuclear, cortical, and posterior subcapsular groups for statistical significance. One hundred five eyes of 65 patients were assessed. Twenty-eight eyes (23.33%) had predominantly nuclear opacification (NO1-NO6 and C1-2), and 13 (10.83%) had mainly cortical opacification (C1-4). Sixty-four eyes (65.83%) had a mixed pattern of LOCS III classification, which hindered the establishment of a correlation between the aberrometry and cataract type. Eighteen eyes that presented with dense posterior subcapsular cataract (P4-5) and 7 eyes with cortical C5 LOCS III classification were excluded. In eyes with nuclear opacification, the mean spherical aberration with a 6.0 mm pupil was 0.45 microm +/- 0.17 (SD) and the mean coma was 0.29 +/- 0.13 microm. In eyes with predominantly cortical cataract, the mean spherical aberration was 0.12 +/- 0.10 microm and the mean coma was 0.49 +/- 0.23 microm. The cortical cataract group had statistically significantly higher coma than the other groups (P<.001). The nuclear cataract group had statistically significantly higher spherical aberrations than the other groups (P<.001). Different types of early lenticular opacities induced different wavefront aberration profiles. Coma predominated in the cortical cataract group, and spherical aberration predominated in the nuclear cataract group.
Arquivos Brasileiros de Oftalmologia, 2006
Objetivo: Comparar os resultados obtidos após o Lasik personalizado utilizando duas plataformas d... more Objetivo: Comparar os resultados obtidos após o Lasik personalizado utilizando duas plataformas diferentes. Métodos: Estudo prospectivo, randomizado com 50 pacientes míopes submetidos a cirurgia refrativa em ambos os olhos. Foram selecionados para o ...
To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in... more To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in determining corneal epitheliumϪintraocular lens (IOL) and border IOLϪiris distances.
Arquivos Brasileiros De Oftalmologia, 2000
... experimental, Documentos relacionados. Id: 288002. Autor: Forseto, Adriana dos Santos; Nosé, ... more ... experimental, Documentos relacionados. Id: 288002. Autor: Forseto, Adriana dos Santos; Nosé, Regina Aidar Menon; Nosé, Walton. Título: PRK versus LASIK para correçäo de miopia baixae moderada / PRK versus LASIK for correction of low and moderate myopia. Fonte: Arq. ...
Arquivos Brasileiros De Oftalmologia, 2001
Abstract: Objetivo: Avaliar alterações do cristalino relacionadas à idade, em olhos normais, anal... more Abstract: Objetivo: Avaliar alterações do cristalino relacionadas à idade, em olhos normais, analisando-se sua densidade e espessura, além da profundidade da câmara anterior (PCA). Métodos: Foram estudados 120 olhos de 60 pacientes hígidos por meio do ...
Arquivos brasileiros de oftalmologia, 2014
This case report describes the production of an ultrathin endothelial donor corneal lamella using... more This case report describes the production of an ultrathin endothelial donor corneal lamella using a femtosecond laser with low energy and a high frequency. In addition, we report its use in vivo in an eye with pseudophakic bullous keratopathy. The outcomes were observed 3 months after surgery in terms of the change in endothelial donor lamella and full cornea thickness (including pachymetric mapping), visual acuity, and endothelial cell count.
Arquivos Brasileiros De Oftalmologia, 2001
Journal of Cataract and Refractive Surgery, 1999
Purpose:To assess the safety and effectiveness of excimer laser in situ keratomileusis(LASIK) to ... more Purpose:To assess the safety and effectiveness of excimer laser in situ keratomileusis(LASIK) to correct refractive myopia, astigmatism, or both after keratoplasty.
Retina, 2010
Wolters Kluwer Health may email you for journal alerts and information, but is committed to maint... more Wolters Kluwer Health may email you for journal alerts and information, but is committed to maintaining your privacy and will not share your personal information without your express consent. For more information, please refer to our Privacy Policy. ... Skip Navigation Links Home > March ...
Ophthalmology, 2010
To compare the outcome of phacoemulsification using 2 different iris-fixation techniques for intr... more To compare the outcome of phacoemulsification using 2 different iris-fixation techniques for intraocular lens (IOL) replacement, a foldable posterior chamber IOL (PCIOL; AcrySof MA60AC, Alcon Laboratories Inc, Fort Worth, TX) and an iris-claw anterior chamber IOL (ACIOL; Artisan, Ophtec BV), for treatment of subluxated lenses in patients with Marfan syndrome (MFS). Randomized, controlled trial. A total of 31 eyes of 16 patients with subluxated lenses associated with MFS and a preoperative corrected visual acuity (CVA) < or =20/40 based on the Early Treatment Diabetic Retinopathy Study chart. Patients were enrolled and the eye with worse visual acuity was randomly assigned to 1 of 2 study arms: phacoemulsification and iris-fixated PCIOL or phacoemulsification and iris-claw ACIOL; the second eye of the same patient received the other IOL type. Preoperative and postoperative ophthalmologic examination, optical coherence tomography, and endothelial cell counts were performed. We recorded CVA results at 3, 6, and 12 months, complications, endothelial cell loss, and central retinal thickness. In the iris-fixated PCIOL group, CVA was significantly improved at 3 (P = 0.011; n = 16), 6 (P = 0.006; n = 16), and 12 months (P = 0.002; n = 16). In the iris-claw ACIOL group, CVA was significantly improved at 3 (P = 0.001; n=15), 6 (P = 0.001; n = 15), and 12 months (P = 0.009; n = 12). The CVA results did not differ significantly between groups. Dislocation of the IOL occurred in 3 of 16 (18.75%) eyes in the PCIOL group. Retinal detachment occurred in 3 eyes (2 in the PCIOL group and 1 in the ACIOL group) and was successfully repaired. Postoperative foveal tomograms in both groups revealed a decrease in the mean foveal thickness (MFT; < or =172 microm) in 54.16% of the patients. The iris-sutured PCIOL and iris-claw ACIOL produced comparable improvements in CVA at 3, 6, and 12 months postoperatively. Although IOL dislocation tended to occur more frequently in the iris-fixated PCIOL group, the difference was not significant. At 6 months postoperatively, all study patients tended to have a thinner MFT. None of the patients in either group developed cystoid macular edema.
Ophthalmology, 2010
Purpose: To compare corneal hysteresis (CH), corneal resistance factor (CRF), spherical equivalen... more Purpose: To compare corneal hysteresis (CH), corneal resistance factor (CRF), spherical equivalent (SE), average central keratometry (K-Avg), corneal astigmatism (CA), corneal volume (CV), anterior chamber (AC) depth, and central corneal thickness (CCT) between patients with mild keratoconus and healthy controls and to estimate the sensitivity and specificity of CH and CRF in discriminating mild keratoconus from healthy corneas.
Ophthalmology, 2007
To compare distance-corrected, near, and intermediate visual acuities as a measurement of depth o... more To compare distance-corrected, near, and intermediate visual acuities as a measurement of depth of focus and spherical aberration of eyes implanted with aspheric and spherical intraocular lenses (IOLs).
Ophthalmology, 2002
To evaluate hyperopic laser in situ keratomileusis (H-LASIK) for radial keratotomy (RK)-induced h... more To evaluate hyperopic laser in situ keratomileusis (H-LASIK) for radial keratotomy (RK)-induced hyperopia. Noncomparative interventional retrospective nonconsecutive case series. Sixty-nine eyes of 47 patients who had undergone RK and were seen with induced hyperopia. H-LASIK was performed with an excimer laser. The mean refractive error, in spherical equivalents (SE), uncorrected visual acuity (UCVA), and best spectacle-corrected visual acuity (BSCVA) before and after H-LASIK are reported. Safety was analyzed using a mean follow-up time of 6.6 plus minus 3.24 months. Preoperative mean SE was +3.4 plus minus 1.6 diopters (D). Postoperative mean SE was -0.32 plus minus 1.2 D. A high percentage of eyes (79.7%; n = 55) were between plus minus1.0 D of emmetropia and 88% within plus minus 2.0 D. Preoperative BSCVA was 20/20 in 53.6% of eyes (n = 37) and 20/40 or better in 100% (n = 69). Postoperative BSCVA was 20/20 in 55% of eyes (n = 38) and 20/40 or better in 95.6% (n = 66) of eyes. Preoperative UCVA was less-than-or-equal20/50 in 52 cases (75.4%). Postoperative UCVA was 20/20 in 13 cases (18.8%) and greater-than-or-equal20/40 in 45 cases (65.2%). Four eyes lost 2 Snellen lines because of epithelial ingrowth in the interface (n = 3) and diffuse lamellar keratitis (Sands of the Sahara syndrome; n = 2). One of the eyes with Sahara syndrome also had epithelial ingrowth and flap necrosis. Thirteen eyes lost 1 Snellen line, and 50 eyes maintained or gained Snellen lines. The only intraoperative complication was incision opening (n = 8) while the flap was lifted; there were no further complications. These patients did not lose any Snellen lines of their BSCVA. H-LASIK can be used successfully to correct RK-induced hyperopia.
Journal of Refractive Surgery, 2010
PURPOSE: To evaluate and compare tomographic, clinical, and biomechanical data of patients with u... more PURPOSE: To evaluate and compare tomographic, clinical, and biomechanical data of patients with unilateral keratoconus and healthy controls.
Journal of Cataract & Refractive Surgery, 2014
PURPOSE: To compare the outcomes of congenital cataract surgery using intraoperative intracameral... more PURPOSE: To compare the outcomes of congenital cataract surgery using intraoperative intracameral triamcinolone versus postoperative oral prednisolone to modulate ocular inflammation. SETTING: Department of Congenital Cataract, Altino Ventura Foundation, Recife, Brazil. DESIGN: Randomized clinical trial.
Journal of Cataract & Refractive Surgery, 2001
To evaluate the effectiveness of the surgical correction of high myopia 5 years after anterior ch... more To evaluate the effectiveness of the surgical correction of high myopia 5 years after anterior chamber intraocular lens (IOL) implantation and to analyze the lens position and related complications. Federal University of São Paulo-Escola Paulista de Medicina, São Paulo, Brazil. This prospective study comprised 26 eyes that were implanted with an anterior chamber IOL (model ZB5M) and had a minimum follow-up of 5 years. Before and after surgery, manifest and cycloplegic refractions were done; slitlamp examination was performed; anterior chamber depth was measured; and keratometry, ophthalmoscopy, and central corneal endothelial cell count were performed. At the last follow-up, computerized biomicroscopy of the anterior segment was also done. The spherical equivalent decreased from -16.5 diopters (D) +/- 4.1 (SD) preoperatively to -0.9 +/- 0.9 D postoperatively. At the last examination, 57.7% of eyes had a spherical equivalent refraction within +/-1.0 D of emmetropia. Of eyes with a preoperative best spectacle-corrected visual acuity of 20/40 or better, 73.3% had an uncorrected visual acuity of 20/40 or better postoperatively. The mean tilt caused by the IOL was 4.4 +/- 2.7 degrees (range 0.5 to 12.2 degrees) and the mean IOL decentration, 0.3 +/- 0.2 mm (range 0.02 to 0.8 mm). The mean decrease in the endothelial cell count was 1.5%, with a mean cell density of 2808 +/- 305 cells/mm2 preoperatively and 2765 +/- 242 cells/mm2 postoperatively. Pupillary ovalization was observed in 12 eyes (46.1%). The anterior chamber IOL safely and effectively corrected high myopia.
Journal of Cataract & Refractive Surgery, 2003
To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in... more To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in determining corneal epitheliumϪintraocular lens (IOL) and border IOLϪiris distances.
Journal of Cataract & Refractive Surgery, 2007
To evaluate the amount of ultrasound (US) used, best corrected visual acuity (BCVA), and corneal ... more To evaluate the amount of ultrasound (US) used, best corrected visual acuity (BCVA), and corneal endothelial cell loss in bimanual microincision cataract surgery (MICS) and coaxial phacoemulsification. Department of Ophthalmology, Universidade Gama Filho, Rio de Janeiro, Brazil. A prospective randomized study included 30 patients (60 eyes) with bilateral cataract. All patients had coaxial phacoemulsification in 1 eye and MICS in the fellow eye. The US time and the effective US time were measured intraoperatively. The BCVA and central endothelial cell loss were evaluated in both groups over a 1-year follow-up. The results between the 2 groups were compared. The total US time was lower in the coaxial phacoemulsification group than in the MICS group; the means were 0.50 minutes +/- 0.33 (SD) and 0.82 +/- 0.39 minutes, respectively. The mean US power was similar between groups (mean 10.1% +/- 3.76% and 10.0% +/- 4.0%, respectively). The BCVA was similar between the groups from 24 hours to 1 year. The mean central corneal endothelial cell loss at 3 months was 4.66% +/- 6.10% in the coaxial phacoemulsification group and 4.45% +/- 5.06% in the MICS group and at 1 year, 6.00% +/- 6.72% and 8.82% +/- 7.39%, respectively. The only significant difference in the postoperative results between the 2 groups was central endothelial cell loss at the 1-year follow-up. The US time was longer in the MICS group than in the in the coaxial phacoemulsification group, but the mean US power was similar between groups. The BCVA was also similar between groups; however, the MICS group had more central endothelial cell loss at the 1-year follow-up.
Journal of Cataract & Refractive Surgery, 2007
To analyze higher-order aberrations induced by different types of lenticular opacities. Federal U... more To analyze higher-order aberrations induced by different types of lenticular opacities. Federal University of São Paulo, São Paulo, Brazil. One hundred thirty-eyes of 65 patients with bilateral cataract, classified according to the Lens Opacities Classification System III (LOCS III), had complete ophthalmic examinations, corneal topography (EyeSys Technologies), and wavefront analysis (LADARWave, Alcon Laboratories). Patients with cataracts that could not be measured by a Hartmann-Shack sensor or those with coexisting ocular disease were excluded. Higher-order aberrations were compared between the nuclear, cortical, and posterior subcapsular groups for statistical significance. One hundred five eyes of 65 patients were assessed. Twenty-eight eyes (23.33%) had predominantly nuclear opacification (NO1-NO6 and C1-2), and 13 (10.83%) had mainly cortical opacification (C1-4). Sixty-four eyes (65.83%) had a mixed pattern of LOCS III classification, which hindered the establishment of a correlation between the aberrometry and cataract type. Eighteen eyes that presented with dense posterior subcapsular cataract (P4-5) and 7 eyes with cortical C5 LOCS III classification were excluded. In eyes with nuclear opacification, the mean spherical aberration with a 6.0 mm pupil was 0.45 microm +/- 0.17 (SD) and the mean coma was 0.29 +/- 0.13 microm. In eyes with predominantly cortical cataract, the mean spherical aberration was 0.12 +/- 0.10 microm and the mean coma was 0.49 +/- 0.23 microm. The cortical cataract group had statistically significantly higher coma than the other groups (P<.001). The nuclear cataract group had statistically significantly higher spherical aberrations than the other groups (P<.001). Different types of early lenticular opacities induced different wavefront aberration profiles. Coma predominated in the cortical cataract group, and spherical aberration predominated in the nuclear cataract group.
Arquivos Brasileiros de Oftalmologia, 2006