Navegando por Palavras-chave "visual acuity"
Agora exibindo 1 - 3 de 3
Resultados por página
Opções de Ordenação
- ItemAcesso aberto (Open Access)Neuromotor development and visual acuity in premature infants submitted to early visuo-motor stimulation(Pontificia Universidade Católica do Rio de JaneiroUniversidade de BrasíliaUniversidade de São Paulo, 2008-06-01) Mazzitelli, Carla; Costa, Marcelo Fernandes; Salomão, Solange Rios [UNIFESP]; Haro, Filomena Maria Buosi De; Berezovsky, Adriana [UNIFESP]; Durigon, Odete Fernandes; Ventura, Dora Fix; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)To investigate the effects of early visual stimulation on the development of tonus and posture control and of grating visual acuity of preterm infants, eight infants received visual stimulation that induced head motion during the first 6 months of life in weekly sessions. Their performance was compared with that of unstimulated preterm infants of same age (n = 6). Both groups were evaluated in the developmental scale of Gesell and had their grating visual acuity measured by swept visually evoked potentials (sweep-VEP). Visuomotor performance and adoption and maintenance of postures were significantly better for the stimulated group (p < .05) compared to the unstimulated group. There was no statistical difference between the two groups for the development of visual acuity. Visuo-motor and postural development improved with the early visuo-motor stimulation program. The lack of influence of this program in the development of visual acuity may be attributed to differences in the pathways involved in the processing of visual acuity of patterns and in the responses elicited by visuo-motor stimulation.
- ItemSomente MetadadadosSight-dependent quality of life and ophthalmic findings in a group of Brazilian patients with multiple sclerosis(Assoc Arquivos Neuro- Psiquiatria, 2011-10-01) Fragoso, Yara Dadalti [UNIFESP]; Nosé, Ricardo Menon; Nosé, Regina Aidar Menon; Nosé, Walton [UNIFESP]; Vieira, Simone; Finkelsztejn, Alessandro; Univ Metropolitana SAntos UNIMES; MS Reference Ctr DRS IV; Eye Clin Day Hosp; Universidade Federal de São Paulo (UNIFESP); Univ Metropolitana Santos; Hosp Clin Porto AlegreObjective: To assess the visual quality of life in patients with multiple sclerosis (MS), and to observe whether this parameter could be correlated to the findings of the ophthalmologic examination. Method: The translated and validated 25-Item National Eye Institute Visual Function Questionnaire (VFQ-25) was used to assess the visual quality of life. Clinical data on MS, visual acuity, visual fields, optic coherence tomography (OCT) and disc cupping were used for assessing correlation with VFQ-25. Results: The mean VFQ-25 value was 78.6+/-18.2% in 27 patients. VFQ-25 did not correlate with patients' ages, with disability (EDSS), disease duration or medication use. Visual acuity showed a relatively poor (<60%) correlation to VFQ-25, while no correlation could be established between visual fields, OCT and disc cupping with VFQ-25. Conclusion: MS patients present several alterations in their eyes and sight that cannot be assessed by isolated measures. Ophthalmological examination of these patients must include many parameters not usually used in standard ophthalmologic consultations.
- ItemSomente MetadadadosVisual electrophysiologic findings in patients from an extensive Brazilian family with Leber's hereditary optic neuropathy - Visual electrophysiology in LHON(Kluwer Academic Publ, 2004-03-01) Salomão, Solange Rios [UNIFESP]; Berezovsky, Adriana [UNIFESP]; Andrade, R. E.; Belfort, R.; Carelli, Valerio; Sadun, Alfredo A.; Universidade Federal de São Paulo (UNIFESP); Univ Bologna; Univ So CalifLeber's hereditary optic neuropathy (LHON) is a maternally inherited disease, associated with mitochondrial DNA (mtDNA) point mutations and characterized by bilateral, usually sequential, rapid loss of central vision. the purpose of this study was to investigate electrophysiologically a small cohort of members from an extensive Brazilian family affected by LHON. Pattern-reversal visual evoked potentials (PVEP), and full-field electroretinograms (ERG) were performed on the four index members, all carrying the 11778 homoplasmic mtDNA mutation. They were a 14-year-old recently affected male, his unaffected mother, and her two affected brothers. the three affected members all had bilateral profound visual loss with visual acuities that ranged from 20/250 to CF, cecocentral defects, and severe dyschromatopsia (by FM-100). the unaffected (carrier) female had normal visual acuities, visual fields and color discrimination. Severely prolonged P100 latencies and decreased N75-P100 peak amplitudes were found in pattern-reversal VEPs for three affected members. Normal PVEP responses were found in the carrier female. Rod and cone ERG responses were normal in two affected members, but both the carrier mother and her affected son showed reduced peak-to-peak amplitude for single-flash cone response and 30 Hz flicker, with normal b-wave implicit times. Thus, optic nerve function, evaluated by PVEP, was severely reduced in LHON affected members and normal in the carrier female. However, reduced ERG cone responses suggest that LHON can also affect retinal elements, even in the absence of fundus and other clinical changes that constitute the full and classical expression of LHON.