Base de dados : MEDLINE
Pesquisa : E01.370.380.150 [Categoria DeCS]
Referências encontradas : 5120 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 512 ir para página                         

  1 / 5120 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28471103
[Au] Autor:Yeo JH; Moon NJ; Lee JK
[Ad] Endereço:Department of Ophthalmology, Chung-Ang University College of Medicine, Seoul, Korea.
[Ti] Título:Measurement of Angle Kappa Using Ultrasound Biomicroscopy and Corneal Topography.
[So] Source:Korean J Ophthalmol;31(3):257-262, 2017 Jun.
[Is] ISSN:2092-9382
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To introduce a new convenient and accurate method to measure the angle kappa using ultrasound biomicroscopy (UBM) and corneal topography. METHODS: Data from 42 eyes (13 males and 29 females) were analyzed in this study. The angle kappa was measured using Orbscan II and calculated with UBM and corneal topography. The angle kappa of the dominant eye was compared with measurements by Orbscan II. RESULTS: The mean patient age was 36.4 ± 13.8 years. The average angle kappa measured by Orbscan II was 3.98° ± 1.12°, while the average angle kappa calculated with UBM and corneal topography was 3.19° ± 1.15°. The difference in angle kappa measured by the two methods was statistically significant (p < 0.001). The two methods showed good reliability (intraclass correlation coefficient, 0.671; p < 0.001). Bland-Altman plots were used to demonstrate the agreement between the two methods. CONCLUSIONS: We designed a new method using UBM and corneal topography to calculate the angle kappa. This method is convenient to use and allows for measurement of the angle kappa without an expensive device.
[Mh] Termos MeSH primário: Córnea/diagnóstico por imagem
Topografia da Córnea/métodos
Microscopia Acústica/métodos
[Mh] Termos MeSH secundário: Adulto
Câmara Anterior/anatomia & histologia
Feminino
Seres Humanos
Masculino
Reprodutibilidade dos Testes
Estudos Retrospectivos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE
[do] DOI:10.3341/kjo.2016.0021


  2 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29422750
[Au] Autor:Bussières N; Ababneh OH; Abu Ameerh MA; Al Bdour MD
[Ad] Endereço:Department of Vision Rehabilitation, Faculty of Applied Medical Sciences, German Jordanian University, Amman, Jordan.
[Ti] Título:Keratoconus Asymmetry between Both Eyes Based on Corneal Tomography.
[So] Source:Middle East Afr J Ophthalmol;24(4):171-176, 2017 Oct-Dec.
[Is] ISSN:0975-1599
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To characterize the asymmetry between both eyes in patients with keratoconus based on corneal tomography. MATERIALS AND METHODS: All patients with keratoconus who presented to the eye clinic at Jordan University Hospital between January 2008 and November 2011 were included in the study. Using computerized corneal tomography, the keratometric values and indices of both eyes of participants with keratoconus and normal controls were compared. For both eyes to be considered symmetrical, the difference between the mean curvature power (Km), flat curvature power (K1), or steep curvature power (K2) in both eyes was equal to or <2.5 diopters, and the difference between the thinnest corneal points was equal to or <25.0 µm between both eyes. RESULTS: Ninety-eight patients with keratoconus and 49 normal participants were evaluated. The mean age of the participants was 26.3 ± 6.6 years. The results showed two populations of patients with keratoconus: one with asymmetrical corneas who were more affected by the disease and another with symmetrical corneas. As the disease severity increased, the differences between the two eyes increased for patients with the asymmetrical form, while both corneas of patients with the symmetrical form were similar. CONCLUSIONS: Corneal tomography identified two forms of keratoconus: symmetrical and asymmetrical. The latter tended to be more severe and occurred in a younger age group. Questions remain about whether the two keratoconic forms are specific to the Middle Eastern population and whether there are ethnic or demographic forms of the disease.
[Mh] Termos MeSH primário: Córnea/patologia
Ceratocone/diagnóstico
[Mh] Termos MeSH secundário: Adolescente
Adulto
Topografia da Córnea
Feminino
Seres Humanos
Masculino
Meia-Idade
Tomografia Computadorizada por Raios X
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE
[do] DOI:10.4103/meajo.MEAJO_311_16


  3 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227515
[Au] Autor:Carriazo C; Cosentino MJ
[Ti] Título:A Novel Corneal Remodeling Technique for the Management of Keratoconus.
[So] Source:J Refract Surg;33(12):854-856, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To describe a novel technique to reshape the ectatic cornea by means of crescent keratectomy performed with an excimer laser using a mask. METHODS: A crescent-shaped perforation at the base of the mask allowed the laser ablation to be directed only to the intended region, shielding the remaining cornea. This technique was performed in 3 eyes of 3 patients with keratoconus grade 2 to 3. Arcs of 180° and 360° had been performed depending on the severity of the keratoconus. The edges of the crescent were closed by 10-0 nylon interrupted sutures. RESULTS: At 1 year postoperatively, all cases showed improvement in visual acuity, keratometry, and corneal topography. The treatment also reduced optical aberrations and shortened the anterior chamber depth. CONCLUSIONS: Although the preliminary results are promising, there is a need to standardize a nomogram of this technique for treating keratoconus. [J Refract Surg. 2017;33(12):854-856.].
[Mh] Termos MeSH primário: Córnea/fisiologia
Cirurgia da Córnea a Laser/métodos
Ceratocone/cirurgia
Lasers de Excimer/uso terapêutico
Fenômenos Fisiológicos Oculares
[Mh] Termos MeSH secundário: Adulto
Topografia da Córnea
Feminino
Seres Humanos
Ceratocone/fisiopatologia
Masculino
Refração Ocular/fisiologia
Acuidade Visual/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171004-05


  4 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227514
[Au] Autor:Ganesh S; Brar S; Lazaridis A
[Ti] Título:Management and Outcomes of Retained Lenticules and Lenticule Fragments Removal After Failed Primary SMILE: A Case Series.
[So] Source:J Refract Surg;33(12):848-853, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To describe the management of and report the outcomes following the removal of retained lenticules or lenticule fragments after a complicated small incision lenticule extraction (SMILE). METHODS: Three patients were referred for consultation due to intraoperative complications during SMILE. In case 1, the lenticule was torn during extraction and a central fragment was retained in the pocket. In case 2, the inferior part of the lenticule remained attached at the anterior plane and its detached, superior part was dislocated and folded at the inferior part of the pocket. In case 3, the lenticule was completely attached at the anterior plane. All cases underwent secondary surgery. The lenticule fragment was detached using the dissector's body and tip and was extracted using the advanced lenticule forceps. The retained lenticules were extracted after dissection of tissue bridges at the anterior plane and periphery. RESULTS: Postoperatively, all eyes showed improvement of visual acuity and topographic regularization of the anterior corneal curvature. Complete removal of lenticule remnants was accomplished in cases 1 and 2. In case 3, the photodisruption during primary SMILE was incomplete at a peripheral area next to the incision. A small peripheral fragment, corresponding to the described peripheral area, remained attached after the lenticule removal and was left in situ but did not have any impact on visual acuity and quality. CONCLUSIONS: Retained lenticules or lenticule fragments may induce irregular astigmatism and loss of visual acuity. Prompt removal restores visual acuity and induces the desired effect of the primary SMILE procedure. [J Refract Surg. 2017;33(12):848-853.].
[Mh] Termos MeSH primário: Astigmatismo/cirurgia
Substância Própria/patologia
Cirurgia da Córnea a Laser/efeitos adversos
Complicações Intraoperatórias
Transtornos da Visão/cirurgia
[Mh] Termos MeSH secundário: Adulto
Astigmatismo/etiologia
Astigmatismo/fisiopatologia
Substância Própria/diagnóstico por imagem
Cirurgia da Córnea a Laser/métodos
Topografia da Córnea
Feminino
Seres Humanos
Masculino
Refração Ocular/fisiologia
Reoperação
Tomografia de Coerência Óptica
Resultado do Tratamento
Transtornos da Visão/etiologia
Transtornos da Visão/fisiopatologia
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171004-01


  5 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227513
[Au] Autor:Vinciguerra R; Romano V; Arbabi EM; Brunner M; Willoughby CE; Batterbury M; Kaye SB
[Ti] Título:In Vivo Early Corneal Biomechanical Changes After Corneal Cross-linking in Patients With Progressive Keratoconus.
[So] Source:J Refract Surg;33(12):840-846, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To report early corneal biomechanical changes after corneal cross-linking (CXL) in patients with keratoconus. METHODS: Thirty-four eyes of 34 patients undergoing CXL for progressive keratoconus were included in this prospective clinical study. Dynamic corneal response (DCR) parameters obtained with the Corvis ST (OCULUS Optikgeräte GmbH; Wetzlar, Germany) were assessed at baseline (day of CXL) and after 1 month of follow-up; conversely, corneal tomography with the Pentacam (OCULUS Optikgeräte GmbH) was assessed at baseline and at 1, 3, and 6 months after CXL. RESULTS: At the last follow-up visit (123.7 ± 69.6 days), all morphological parameters including steepest point (Kmax) and thinnest corneal thickness (ThCT) indicated stabilization of keratoconus (P > .05). Comparative analyses showed a rise of corneal stiffness demonstrated by a significant increase of Stiffness Parameter A1 (SP-A1) and Highest Concavity (SP-HC) and a significant decrease of Inverse Concave Radius (1/R) and Deformation Amplitude Ratio (DA Ratio) (P < .05). There was a significant correlation between the preoperative keratoconus characteristics (Kmax, Belin/Ambrósio final D value [BAD-D], and ThCT) and the DCR parameters (P < .05). Kmax and BAD-D showed a significant positive correlation with DA Ratio, Deflection Amplitude (DefA), and 1/R and a significant negative correlation with SPA1 and SP-HC. ThCT showed a significant positive correlation with SP-A1 and SP-HC and a significant negative correlation with DA Ratio, DefA, and 1/R. CONCLUSIONS: This study suggests that the new DCR parameters of the Corvis ST are able to detect early changes in biomechanics following CXL and those that are measurable before corneal shape modifications take place. Based on these results, the authors suggest the use of these metrics to assess the early efficacy of cross-linking. [J Refract Surg. 2017;33(12):840-846.].
[Mh] Termos MeSH primário: Córnea/fisiologia
Reagentes para Ligações Cruzadas
Elasticidade/fisiologia
Ceratocone/tratamento farmacológico
Fotoquimioterapia
Fármacos Fotossensibilizantes/uso terapêutico
Riboflavina/uso terapêutico
[Mh] Termos MeSH secundário: Adulto
Fenômenos Biomecânicos
Colágeno/metabolismo
Substância Própria/metabolismo
Topografia da Córnea
Feminino
Seres Humanos
Ceratocone/metabolismo
Ceratocone/fisiopatologia
Masculino
Estudos Prospectivos
Raios Ultravioleta
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cross-Linking Reagents); 0 (Photosensitizing Agents); 9007-34-5 (Collagen); TLM2976OFR (Riboflavin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20170922-02


  6 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227511
[Au] Autor:Li M; Li M; Sun L; Ni K; Zhou X
[Ti] Título:Predictive Formula for Refraction of Autologous Lenticule Implantation for Hyperopia Correction.
[So] Source:J Refract Surg;33(12):827-833, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To create a formula to predict refractive correction of autologous lenticule implantation for correction of hyperopia (with myopia in one eye and hyperopia in the contralateral eye). METHODS: In this prospective study, 10 consecutive patients (20 eyes) who had myopia in one eye and hyperopia in the contralateral eye were included. The preoperative spherical equivalent was -3.31 ± 1.73 diopters (D) for the myopic eyes and +4.46 ± 1.97 D for the hyperopic eyes. For each patient, the myopic eye was treated with small incision lenticule extraction and the lenticule was subsequently implanted into the contralateral hyperopic eye. The average length of follow-up was 17 months. RESULTS: All of the operations were successful without complications. At the last visit, the efficacy index (postoperative uncorrected distance visual acuity/preoperative corrected distance visual acuity [CDVA]) of the hyperopic eyes was 0.94 ± 0.35 and the safety index (postoperative CDVA/preoperative CDVA) was 1.36 ± 0.38. No eyes lost any lines of visual acuity. Six of 10 (60%) of the implanted eyes were within ±1.00 D of the intended refractive target. A predictive formula was derived: Lenticule implantation achieved correction (D) (LAC) = 1.224 Lenticule refractive power (D) (LRP) - 0.063 (R =0.92, P < .001). On corneal topography, there was a significant increase in the corneal anterior surface keratometry value postoperatively, whereas the posterior surface keratometry value remained stable (P > .05). CONCLUSIONS: Autologous lenticule implantation could provide a reliable method of correcting hyperopia. The refractive correction formula may require further verification and adjustment. [J Refract Surg. 2017;33(12):827-833.].
[Mh] Termos MeSH primário: Substância Própria/transplante
Hiperopia/cirurgia
Refração Ocular/fisiologia
[Mh] Termos MeSH secundário: Adulto
Topografia da Córnea
Feminino
Seguimentos
Seres Humanos
Hiperopia/fisiopatologia
Lasers de Excimer/uso terapêutico
Masculino
Microcirurgia
Miopia/cirurgia
Estudos Prospectivos
Tomografia de Coerência Óptica
Transplante Autólogo
Acuidade Visual/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171016-01


  7 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227510
[Au] Autor:Lin DTC; Holland SP; Verma S; Hogden J; Arba-Mosquera S
[Ti] Título:Postoperative Corneal Asphericity in Low, Moderate, and High Myopic Eyes After Transepithelial PRK Using a New Pulse Allocation.
[So] Source:J Refract Surg;33(12):820-826, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To evaluate the postoperative asphericity in low, moderate, and high myopic eyes after combined transepithelial photorefractive keratectomy and SmartSurf treatment (SCHWIND eye-tech-solutions GmbH, Kleinostheim, Germany). METHODS: In this retrospective case series, the outcomes of myopic SmartSurf were evaluated at 3 months postoperatively in 106 eyes and divided into low (less than -4.125 diopters [D]), moderate (-4.125 to -6.25 D), and high (more than -6.25 D) myopia groups. In all cases, standard examinations and preoperative and postoperative corneal topography (SCHWIND Sirius) were performed. The analysis comprised evaluating the change in asphericity versus planned correction, comparing expected and achieved postoperative asphericity for all eyes, and comparison of the three groups in terms of the preoperative and postoperatively expected and achieved asphericity. RESULTS At 3 months postoperatively, the low myopia group (n = 33) improved average negative asphericity (Q = -0.04 ± 0.17 preoperative vs -0.19 ± 0.20 postoperative, P < .05). The moderate myopia group (n = 35) maintained or slightly improved average negative asphericity (Q = -0.07 ± 0.14 preoperative vs -0.05 ± 0.24 postoperative, P = .35). For the high myopia group (n = 38), the eyes became more oblate compared to the preoperative status (Q = -0.09 ± 0.15 preoperative vs 0.62 ± 0.70 postoperative, P < .05). In terms of asphericity, the difference between the three groups was not statistically significant preoperatively (P > .10), but showed significant differences postoperatively (P < .007). The cohort's average preoperative corrected distance visual acuity was 0.01 ± 0.04 logMAR (range: 0.0 to 0.18 logMAR) and uncorrected distance visual acuity was 0.03 ± 0.08 logMAR (range: -0.12 to 0.40 logMAR) 3 months postoperatively. CONCLUSIONS: SmartSurf maintained or slightly improved preoperative corneal asphericity for low to moderate myopic corrections (up to -6.00 D). This may provide advantages in the quality of vision and the onset of presbyopic symptoms after laser refractive surgery in myopic patients. [J Refract Surg. 2017;33(12):820-826.].
[Mh] Termos MeSH primário: Córnea/fisiopatologia
Lasers de Excimer/uso terapêutico
Miopia/cirurgia
Ceratectomia Fotorrefrativa/métodos
[Mh] Termos MeSH secundário: Adulto
Topografia da Córnea
Feminino
Seres Humanos
Masculino
Meia-Idade
Miopia/classificação
Miopia/fisiopatologia
Período Pós-Operatório
Refração Ocular/fisiologia
Estudos Retrospectivos
Acuidade Visual/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20170920-02


  8 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227509
[Au] Autor:Garcia-Gonzalez M; Drake Rodriguez-Casanova P; Rodriguez-Perez I; Rodero A; Teus MA
[Ti] Título:Long-term Follow-up of LASEK With Mitomycin C Performed to Correct Myopia in Thin Corneas.
[So] Source:J Refract Surg;33(12):813-819, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To evaluate the long-term outcomes of laser-assisted subepithelial keratomileusis (LASEK) with intraoperative use of mitomycin C (MMC) performed on thin corneas for the correction of myopia. METHODS: This retrospective cohort study included 100 eyes with a preoperative central corneal thickness (CCT) thinner than 500 µm that underwent LASEK + MMC with at least 6 years of follow-up. Stability of visual acuity and refraction and the efficacy, safety, and predictability at the examinations 3 months and the last annual postoperative visit were analyzed. RESULTS: Preoperative CCT was 482.9 ± 14.7 µm (range: 433 to 499 µm). Mean preoperative spherical equivalent was -4.09 ± 2.3 diopters (D). At the 3-month postoperative visit, mean CCT was 419.79 ± 32.6 µm. The residual spherical equivalent showed a statistically significant regression (P = .001) in the comparison between the 3-month and the last annual postoperative visit. The efficacy index showed a significant decrease (P = .01) and the safety index remained stable around 0.96. Six or more years after the surgery, 85 eyes (85%) were within ±0.50 D and 94 eyes (94%) eyes were within ±1.00 D of emmetropia. The topography did not show signs of secondary corneal ectasia in any eye. CONCLUSIONS: LASEK with intraoperative use of MMC seems to be safe, effective, and predictable to correct myopia in corneas thinner than 500 µm and with normal preoperative topography, providing good visual and refractive outcomes with no topographic signs of corneal ectasia in a mean 6.5-year follow-up. [J Refract Surg. 2017;33(12):813-819.].
[Mh] Termos MeSH primário: Alquilantes/administração & dosagem
Córnea/patologia
Ceratectomia Subepitelial Assistida por Laser/métodos
Lasers de Excimer/uso terapêutico
Mitomicina/administração & dosagem
Miopia/terapia
[Mh] Termos MeSH secundário: Adulto
Terapia Combinada
Paquimetria Corneana
Topografia da Córnea
Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
Miopia/tratamento farmacológico
Miopia/fisiopatologia
Miopia/cirurgia
Refração Ocular
Estudos Retrospectivos
Acuidade Visual
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkylating Agents); 50SG953SK6 (Mitomycin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171004-06


  9 / 5120 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29227506
[Au] Autor:Ferreira TB; Ribeiro P; Ribeiro FJ; O'Neill JG
[Ti] Título:Comparison of Methodologies Using Estimated or Measured Values of Total Corneal Astigmatism for Toric Intraocular Lens Power Calculation.
[So] Source:J Refract Surg;33(12):794-800, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To compare the prediction error in the calculation of toric intraocular lenses (IOLs) associated with methods that estimate the power of the posterior corneal surface (ie, Barrett toric calculator and Abulafia-Koch formula) with that of methods that consider real measures obtained using Scheimpflug imaging: a software that uses vectorial calculation (Panacea toric calculator: http://www.panaceaiolandtoriccalculator.com) and a ray tracing software (PhacoOptics, Aarhus Nord, Denmark). METHODS: In 107 eyes of 107 patients undergoing cataract surgery with toric IOL implantation (Acrysof IQ Toric; Alcon Laboratories, Inc., Fort Worth, TX), predicted residual astigmatism by each calculation method was compared with manifest refractive astigmatism. Prediction error in residual astigmatism was calculated using vector analysis. RESULTS: All calculation methods resulted in overcorrection of with-the-rule astigmatism and undercorrection of against-the-rule astigmatism. Both estimation methods resulted in lower mean and centroid astigmatic prediction errors, and a larger number of eyes within 0.50 diopters (D) of absolute prediction error than methods considering real measures (P < .001). Centroid prediction error (CPE) was 0.07 D at 172° for the Barrett toric calculator and 0.13 D at 174° for the Abulafia-Koch formula (combined with Holladay calculator). For methods using real posterior corneal surface measurements, CPE was 0.25 D at 173° for the Panacea calculator and 0.29 D at 171° for the ray tracing software. CONCLUSIONS: The Barrett toric calculator and Abulafia-Koch formula yielded the lowest astigmatic prediction errors. Directly evaluating total corneal power for toric IOL calculation was not superior to estimating it. [J Refract Surg. 2017;33(12):794-800.].
[Mh] Termos MeSH primário: Astigmatismo/diagnóstico
Córnea/patologia
Implante de Lente Intraocular
Lentes Intraoculares
Óptica e Fotônica/métodos
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Biometria/métodos
Topografia da Córnea
Feminino
Seres Humanos
Masculino
Meia-Idade
Nomogramas
Facoemulsificação
Refração Ocular/fisiologia
Estudos Retrospectivos
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171004-03


  10 / 5120 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29439700
[Au] Autor:Jian W; Shen Y; Chen Y; Tian M; Zhou X
[Ad] Endereço:The Eye and ENT Hospital of Fudan University, Shanghai, China.
[Ti] Título:Ocular dimensions of the Chinese adolescents with keratoconus.
[So] Source:BMC Ophthalmol;18(1):43, 2018 Feb 13.
[Is] ISSN:1471-2415
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Adolescent KC is a special segment of the general KC population because an adolescents's eyes are still susceptible to blurred vision and optical defocus during the sensitive period of ocular and visual development. In the present study, we evaluated the ocular dimensions of 53 KC adolescents. METHODS: One hundred and six KC eyes of 53 (42 boys and 11 girls) KC adolescents (age 15.5 ± 1.7 years, range 11 to 18) were involved in this retrospective study. The eye with more severe KC (Severe Group) of each patient was compared with their less affected eye (Mild Group). Optical axial length (OAL) was measured by optical coherence biometry (IOL-master). Central corneal thickness, anterior chamber depth (ACD), flat keratometry value, steep keratometry value, and maximum keratometry value were assessed with an anterior segment analyzer (Pentacam HR). Anterior segment length (ASL) was manually measured from the 25 scheimpflug images captured by the Pentacam HR with the mean value recorded. The posterior segment length (PSL) was calculated with the formula "PSL = OAL-ASL". RESULTS: The mean ACD, OAL, ASL, and PSL values of the Severe Group were 3.51 ± 0.32 mm, 24.76 ± 1.24 mm, 4.01 ± 0.30 mm and 20.76 ± 1.15 mm.While those of the Mild Group were 3.36 ± 0.29 mm, 24.97 ± 1.40 mm, 3.94 ± 0.35 mm and 21.03 ± 1.31 mm. The Severe Group has significantly higher ACD (t = 4.539, P < 0.001) value but lower OAL (t = - 3.120, P = 0.003) and PSL (t = - 4.537, P < 0.001) values when compared with those of the Mild Group. For the Severe Group, the Kmax values were significantly correlated with the SE values (R = - 0.385, P = 0.004), the ACD values (R = 0.375, P = 0.006), the ASL values (R = 0.308, P = 0.025) and the PSL values (R = - 0.317, P = 0.021), but not with the OAL values (R = - 0.220, P = 0.114). In the Mild Group, the Kmax values were negatively correlated with the SE (R = - 0.577, P < 0.001), OAL(R = - 0.533, P < 0.001), and PSL (R = - 0.523, P < 0.001) values, but not with ACD (R = - 0.110, P = 0.434) or ASL (R = - 0.182, P = 0.192) values. CONCLUSIONS: For adolescent KC, the more keratoconic eyes may be characterized by deeper ACD but shorter OAL and PSL, when compared with the less affected ones.
[Mh] Termos MeSH primário: Câmara Anterior/patologia
Comprimento Axial do Olho/patologia
Ceratocone/diagnóstico
[Mh] Termos MeSH secundário: Adolescente
Grupo com Ancestrais do Continente Asiático/etnologia
Biometria
Criança
China/epidemiologia
Topografia da Córnea
Feminino
Seres Humanos
Ceratocone/epidemiologia
Masculino
Refração Ocular
Estudos Retrospectivos
Tomografia de Coerência Óptica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180218
[Lr] Data última revisão:
180218
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180215
[St] Status:MEDLINE
[do] DOI:10.1186/s12886-018-0713-6



página 1 de 512 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde