MILTON RUIZ ALVES
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Otorrinolaringologia e Oftalmologia, Faculdade de Medicina - Docente
LIM/33 - Laboratório de Oftalmologia, Hospital das Clínicas, Faculdade de Medicina - Líder
LIM/33 - Laboratório de Oftalmologia, Hospital das Clínicas, Faculdade de Medicina - Líder
5 resultados
Resultados de Busca
Agora exibindo 1 - 5 de 5
- Comparison between refraction measured by Spot Vision Screening (TM) and subjective clinical refractometry(2016) JESUS, Daniela Lima de; VILLELA, Flavio Fernandes; ORLANDIN, Luis Fernando; EIJI, Fernando Naves; DANTAS, Daniel Oliveira; ALVES, Milton RuizOBJECTIVE: The purpose of this study was to evaluate the accuracy of Spot Vision Screening (TM) as an autorefractor by comparing refraction measurements to subjective clinical refractometry results in children and adult patients. METHODS: One-hundred and thirty-four eyes of 134 patients were submitted to refractometry by Spot and clinical refractometry under cycloplegia. Patients, students, physicians, staff and children of staff from the Hospital das Clinicas (School of Medicine, University of Sao Paulo) aged 7-50 years without signs of ocular disease were examined. Only right-eye refraction data were analyzed. The findings were converted in magnitude vectors for analysis. RESULTS: The difference between Spot Vision Screening (TM) and subjective clinical refractometry expressed in spherical equivalents was +0.66 +/- 0.56 diopters (D), +0.16 +/- 0.27 D for the vector projected on the 90 axis and +0.02 +/- 0.15 D for the oblique vector. CONCLUSIONS: Despite the statistical significance of the difference between the two methods, we consider the difference non-relevant in a clinical setting, supporting the use of Spot Vision Screening (TM) as an ancillary method for estimating refraction.
- Comments to: Recurrence and complications of pterygium extended removal followed by extended conjunctival transplant for primary pterygia(2016) MARTINS, Thiago Goncalves dos Santos; COSTA, Ana Luiza Fontes de Azevedo; CHAMMAS, Roger; ALVES, Milton Ruiz; SCHOR, Paulo
article 49 Citação(ões) na Scopus Mitomycin C in pterygium treatment(2016) MARTINS, Thiago Goncalves dos Santos; COSTA, Ana Luiza Fontes de Azevedo; ALVES, Milton Ruiz; CHAMMAS, Roger; SCHOR, PauloPterygium is a benign lesion usually growing from the nasal side of the conjunctiva onto the cornea. Most cases of pterygium does not cause problem or requires specific treatment. The exact cause of pterygium is not clear yet, but some factors are pointed as causes, being the most important the long term ultraviolet ray exposure. Pterygium surgery is usually considered when there are symptoms that do not respond to conservative treatment. Recurrence is the main complication of the surgery, and much has been done to avoid it. Mitomycin C (MMC) has been used as a fibroblast proliferation inhibitor during the surgery to reduce the chance of recurrence of the pterygium. This review describes the use of MMC as an adjunctive, the optimal dosage, the duration of administration of MMC and possible complications, when used during, after and before the surgery. Most studies suggest that increased exposure (dose or duration) of MMC is associated with a lower recurrence, but with higher risks of complications.- Astigmatic Vector Analysis of Posterior Corneal Surface: A Comparison Among Healthy, Forme Fruste, and Overt Keratoconic Corneas(2016) FREITAS, Giuliano de Oliveira; AMBROSIO JR., Renato; RAMOS, Isaac; LOPES, Bernardo; VALBON, Bruno de Freitas; BOTTEON, Cristiane; ALVE, Milton RuizPURPOSE: To determine novel diagnostic parameters for keratoconus, and to assess the correlation between anterior and posterior corneal surfaces based on vectorial astigmatism analyses. DESIGN: Retrospective case-control study. METHODS: Six hundred and ninety-eight eyes of 698 patients were enrolled in the study. Healthy corneas, or controls (C, n = 264), were compared to keratoconic corneas, further categorized as forme fruste (FFKc, n = 212) and overt keratoconus (Kc, n = 222). Corneal measurements were obtained from a Scheimpflug-based tomographer. Vectorial analyses were conducted in accordance with the method proposed by Thibos. RESULTS: Posterior corneal astigmatic power vector (APV) >0.23 diopter (D) yielded a test for overt Kc with sensitivity and specificity rates of, respectively, 81% and 77%, indicating a positive likelihood ratio (LR+) of 3.5 and a negative likelihood ratio (LR-) of 0.25. Posterior corneal overall blur vector (Blur) >6.45 D yielded a test slightly less sensitive and specific, with rates of 75% and 72%, respectively, associated to LR+ of 2.7 and LR- of 0.35. The highest (Spearman rho) correlation coefficients between anterior and posterior corneal astigmatisms were associated with Blur, being 0.93 for Kc, 0.87 for C, and 0.81 for FFKc. The astigmatism vectors along the 45 -degree (J(45)) and 0-dregree meridians (J(0)) and APV most often presented higher coefficient values for Kc and FFKc than for C (P=.01). CONCLUSIONS: Posterior corneal vectors APV and Blur constitute objective supplemental parameters for the diagnosis of Kc. Anterior and posterior corneal surfaces correlate in all groups, although it was not possible to accurately predict posterior astigmatism from anterior astigmatism.
- Comparative study on optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis (R) ZMB00 and AcrySof (R) IQ ReSTOR (R) Multifocal IOL SN6AD1(2016) CHAVES, Mario Augusto Pereira Dias; HIDA, Wilson Takashi; TZELIKS, Patrick Frenzel; GONCALVES, Michelle Rodrigues; NOGUEIRA, Fernando de Bortoli; NAKANO, Celso Takashi; MOTTA, Antonio Francisco Pimenta; ARAUJO, Andre Gustavo Rolim de; ALVES, Milton RuizPurpose: To compare the optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis (R) ZMB00 and AcrySof (R) ReSTOR (R) SN6AD1. Methods: This prospective, non-randomized comparative study included the assessment of 74 eyes in 37 patients referred for cataract surgery and candidates for multifocal intraocular lens implants. Exclusion criteria included existence of any other eye disease, previous eye surgery, high axial myopia, preoperative corneal astigmatism of >1.00 cylindrical diopter (D), and intraoperative or postoperative complications. Ophthalmological evaluation included the measurement of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), and distance-corrected intermediate visual acuity (DCIVA), with analysis of contrast sensitivity (CS), wavefront, and visual defocus curve. Results: Postoperative UDVA was 0.09 and 0.08 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.868); postoperative CDVA was 0.04 and 0.02 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.68); DCIVA was 0.17 and 0.54 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.000); and DCNVA was 0.04 and 0.09 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.001). In both cases, there was an improvement in the spherical equivalent and UDVA (p<0.05). Under photopic conditions, the SN6AD1 group had better CS at low frequencies without glare (p=0.04); however, the ZMB00 group achieved better sensitivity at high frequencies with glare (p=0.003). The SN6AD1 and ZMB00 lenses exhibited similar behavior for intermediate vision, according to the defocus curve; however, the ZMB00 group showed a shorter reading distance than the SN6AD1 group. There were no significant differences regarding aberrometry between the two groups. Conclusion: Both lenses promoted better quality of vision for both long and short distances and exhibited a similar behavior for intermediate vision. The SN6AD1 and ZMB00 groups showed better results for CS under photopic conditions at low and high spatial frequencies, respectively.